This video adapted from the Valdez Museum & Historical Archive, explores what happened during the Great Alaska Earthquake of 1964 through original footage, first-person accounts, and animations illustrating plate tectonics.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: First pose the question: Here are four triangles. What do all of these triangles have in common? What makes them different from the figures that are no...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials * A copy of Grandfather Tang's Story by Ann Tompert * One set of tangrams for each student (see note in commentary) * A set of tangrams for t...

Learn how important the honey bee's body structure is to survival in the hive. This lesson includes learning objectives, material and resource lists, background information, activities, reading selections, writing assignments, a game, assessments, and support documents. See the Educator's Guide for more video links and recommended readings. 

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials - 2 clear plastic cups for each pair of students - 4 bean seeds for each pair - soil - unifix cubes - a plant or math journal to record data ...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials A spinner with the numbers 0, 1, 2, ... 9 A spinner with the decades 00, 10, 20, ... 90 Math journal or teacher-made worksheet Pencil Actions...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials For each pair: * 2 ten-sided dice with the numbers 0 to 9 or two spinners with the numbers 0 to 9 * Base-10 blocks, linking cubes, or bundled...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials Set of cards from 1-100, these can be purchased or created using a black marker and index cards Setup Sort the 1-100 cards into sequential gr...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials 20 counters or linking cubes per pair of students pencil copy of the problem Actions The teacher poses the problem: Bo bought 20 tickets to p...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials * A cup for each student to represent his/her cave * Counters * Recording sheet Actions The teacher begins by counting out a certain number o...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials A large set of dominoes to affix to a whiteboard or place in a pocket chart, or a regular set to use on a document projector. One set of domi...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Write as many equations for each picture as you can. Use the numbers 4, 1, and 5. Here are some equations for this picture. 4+1=5 \hskip4em 5 = 4+1 5-1...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials * Link-cubes or snap-cubes (2 colors for each student or pair of students) * A die * Paper and pencil Actions 1. Roll the die. 2. Using a sin...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials * Unifix cubes * Large blocks in different sizes or varying lengths of sentence strips Note: The large blocks or the cut-up lengths of senten...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials The Very Hungry Caterpillar by Eric Carle The students work individually or in pairs. Each student or pair needs: Three ten-frames for each s...

In this Wonder of the DayR, we learn about why flamingos are pink. Students have the opportunity to explore the Wonder either as a class or individually. With suggestions for different age groups, Wonder #1 has an activity to engage students with drawing, writing description, or both. 

In this lesson children will be asked to make a graph, then listen to a story. After the story, they will do a similar graph and then compare the two graphs.

In this lesson students will listen and match sounds ... either rhyming sounds, beginning sounds, ending sounds or vowel sounds.

While reading the story "Seven Fat Cats", students will listen and match the sounds (rhyming, beginning, ending, and vowel.)

Overview: In this lesson, students will particpate in three separate learning activities. These activities are each made to help improve the students' knowledge of creating real-world problems to represent an addition and a subraction equation within 20. At the end of the lesson, there is an assessment in order to check the effectivenss of the learning activities

In this activity, students determine their own eyesight and calculate what a good average eyesight value for the class would be. Students learn about technologies to enhance eyesight and how engineers play an important role in the development of these technologies.

This problem helps students practice adding three numbers whose sum are 20 or less.

This lesson will allow students to select and share what details are important on a topic.  Groups of students will research a topic and then discuss and determine the top 25 important things someone should know about the topic.

This lesson will allow students to select and share what details are important on a topic.  Groups of students will research a topic and then discuss and determine the top 25 important things someone should know about the topic.

This lesson unit is intended to help teachers assess how well students are able to visualize two-dimensional cross-sections of representations of three-dimensional objects. In particular, the lesson will help you identify and help students who have difficulties recognizing and drawing two-dimensional cross-sections at different points along a plane of a representation of a three-dimensional object.

This Demonstration illustrates the concept of rotating a 2D polygon. The rotation matrix is displayed for the current angle. The default polygon is a square that you can modify.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: * Color the inside of all the triangles blue. * Color the inside of all the quadrilaterals red. * Color the inside of all the pentagons orange. * Color...

Learn the importance of each and every job within the hive! This lesson includes learning objectives, material and resource lists, background information, activities, reading selections, writing assignments, a game, assessments, and support documents. See the Educator's Guide for more video links and recommended readings. 

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials * Alexander, Who Used to be Rich Last Sunday by Judith Viorst * Plastic coins * Labels for items Alexander spent his money on (attached) * Pa...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: One day, Frog and Toad were sitting together on a lily pad. Some lily pads were in a line across the pond. In the morning, Frog hopped three lily pads ...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials * Sets of 3-6 "analog clock cards," enough for each student * Sets of 3-6 "digital clock cards," enough for each student * Paper and pencil A...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Amy went to the arcade. At the arcade, people can buy tokens to use for the games. Amy paid \$5 to get some tokens. Show two different ways she could h...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: 127 is a number. Write it as a sum of 100's, 10's, and 1's. Write its name in words. Draw a picture to represent the number. Locate it on the number li...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials For each student: * A large index card * A pencil Action Part 1 The teacher will put up the following addition problem: \begin{align} 24 &\ \...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Plot the following numbers on the number line. 456 \ \ 983\ \ 938 \ \ 425 \ \ 220 \ \ 202\ \ 799 Choose eight pairs of numbers from those you plotted o...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials * Whiteboard or chart paper and markers * Empty number line or magnetic cubes lined up on the whiteboard, alternating colors every 5 (see sol...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials * Number cards labeled 1-10 (attached as a PDF) Actions * Begin by playing the game as a whole class to demonstrate the rules and for student...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Louis wants to give \$15 to help kids who need school supplies. He also wants to buy a pair of shoes for \$39. How much money will he have to save for ...

Let's review the multiplication principle which allows us to quickly count the number of possible robots.

The focus of this lesson is to provide an opportunity for children to develop oral language skills and to record their oral language to share with others.

Lesson Plan – Math Lesson Plan: Learning to Count Change 2nd grade Activity: Learning to count change: penny, nickel, dime, quarter Grade: 2nd grade Concepts: Teach the students how to recognize change and count using pennies, nickels, dimes, and quarters up to a dollar. National Standards: Math- MA 2.2.5.a. Count mixed coins to $1.00 Objectives: the objective is that the students learn how to recognize and distinguish between different American currency using change: pennies, nickels, dimes, and quarters. Criteria: The student must be able to provide evidence and knowledge of the behavior and the student is expected to learn how to count change (penny, nickel, dime, quarter) up to a dollar will a high accuracy. Multiple Intelligences: The lesson accounts for auditory, visual, and kinetic learners by having the students participate in many different strategic learning activities. Essential Question(s):1.    How can learning to count change help you inside the classroom as well as outside   the classroom?2.    Why is learning to count change important?3.    How can we use counting change in our everyday lives? Ask for examples.4.    Is learning to count money and change useful to you? Conditions:The behavior should be performed within as open class discussion before moving into individual work. Students should be relaxed, engaged, and motivated to learn. Instructional Objectives: The students should be active participants while performing the behavior. Motivation: Making math fun! Incorporating something special to help them count change. Jelly beans, popcorn, (some kind of treat). Explaining how counting can be useful in everyday life. Examples: allowance, tooth fairy, birthdays). They each will earn a chocolate coin during their formative assessment. Connection to Learning:Prior knowledge would be skip-counting and counting to 100. Building on skip-counting by giving individual coins value and understanding those values and how they build to a dollar. Vocabulary:Change: a combination of coins such as pennies, nickels, dimes, and quarters.Penny: is worth 1 cent.Nickel: is worth 5 cents.Dime: is worth 10 cents.Quarter: is worth 25 cents. Materials:ComputerProjector or Smart boardThe Money Song, by Jack HartmannWorksheets: Let’s Make Change, Coins! Let’s Make ChangeCoins: pennies, nickels, dimes, quartersActivity: Race to a Dollar! And paperclipReward: Candy (of whatever reward you would like to use) Procedures:1.     Introduce the subject and the objective to the class.2.     Start off by asking a few questions a short pre-assessment about counting money. What  previous knowledge does the class know?3.     Explain the video we are going to watch that helps introduce the less. Explain how it  teaches the students about money: pennies, nickels, dimes, and quarters. Let them know we are  going to learn a song about money to help them remember the important facts.4.     Watch the video once5.     Teach the students about the song. Work on the song together as a class.6.     Let the class know we are going to play a little game about making change after the video.7.      Watch the video a second time and have the students sing along.8.     Introduce the class activity: Race to a Dollar game9.      Explain the rules to the game and how the winner gets a reward. (You can play the game anyway you would like).10.    Once the game is over and the teacher feels comfortable that the class understood the lesson, pass out and explain the directions for the first or second worksheet.11.     Explain the instruction and dismiss the class to work independently. This is a great time to walk about and formally assess the students independently.12.     Hand out the second worksheet for homework.13.     Explain that we will continue to build on this lesson in the days to follow.14.    A summative assessment will be given at the end of the week. Assessment:Formative assessment - Worksheet: Coins! Let’s Make Change. The teacher will walk around and ask every student individually a questions about change in order to “buy” a chocolate wrapped quarter.  Ex: In order to “buy” this candy from me how can you use different coins to make 30 cents. The student answers: 3 dimes. The teacher will help each student through the question and assess their current knowledge.Summative assessment - quiz on the lesson, how to count change focusing on (pennies, nickels, dimes, and quarters.)   Accommodations/Accommodations for special needs child:Teacher will allow for one on one instruction time once the class has been dismissed to work independently. The class activity will be accomplished with a partner that and or the students will partner up with a student and they will become a team during this activity. The formative assessment will stay the same and the summative assessment will have each student's individual needs and or accommodations as stated in their IEP.   Accommodations for ESL/ELL child: If necessary the teacher will have all directions and instructions written in the students dominate language as well as English to help them understand and accomplish the lesson.   Resources:State Standards: https://www.perma-bound.com/state-standards.do?state=NE&subject=mathematics&gradeLevel=2https://www.perma-bound.com/state-standards.do?state=NE&subject=arts-education&gradeLevel=KYouTube: The Money Song: https://www.youtube.com/watch?v=pnXJGNo08v0Pinterest: https://www.pinterest.com/search/pins/?q=making%20change%20worksheets&rs=rs&eq=&etslf=3110&term_meta[]=making%7Crecentsearch%7Cundefined&term_meta[]=change%7Crecentsearch%7Cundefined&term_meta[]=worksheets%7Crecentsearch%7Cundefinedhttps://www.pinterest.com/pin/287597126182911466/ The Money Song | Penny, Nickel, Dime, QuarterBy, Jack Hartmann Penny, nickel, dime, quarter…Lets learnPenny, nickel, dime, quarter…Lets learn Money, money, money in my pocketMoney, money, I know how to count itMoney, money, money in my pocketMoney, money, I know how to count it What’s it worth? How much is a penny? 1 centHow much is a nickel? 5 centsHow much is a dime? 10 centsHow much is a quarter? 25 cents How much is a penny? 1 centHow much is a nickel? 5 centsHow much is a dime? 10 centsHow much is a quarter? 25 cents Money, money, money in my pocketMoney, money, I know how to count itMoney, money, money in my pocketMoney, money, I know how to count it What’s it worth? How much is a penny? 1 centHow much is a nickel? 5 centsHow much is a dime? 10 centsHow much is a quarter? 25 cents How much is a penny? 1 centHow much is a nickel? 5 centsHow much is a dime? 10 centsHow much is a quarter? 25 cents Money, money, money in my pocketMoney, money, I know how to count itMoney, money, money in my pocketMoney, money, I know how to count it Here is a penny and this is what it looks like…Penny, penny,A penny is worth? 1 centA penny is worth? 1 cent Here is a nickel and this is what it looks like…Nickel, nickelA nickel is worth? 5 centsA nickel is worth? 5 cents Here is a dime and this is what it looks like…Dime, dimeA dime is worth? 10 centsA dime is worth? 10 Cents Here is a quarter and this is what it looks like…Quarter, quarterA quarter is worth? 25 centsA quarter is worth? 25 cents Money, money, money in my pocketMoney, money, I know how to count itMoney, money, money in my pocketMoney, money, I know how to count it Money, money, money in my pocketMoney, money, I know how to count itMoney, money, money in my pocketMoney, money, I know how to count it Money, money, money in my pocketMoney, money, I know how to count itMoney, money, money in my pocketMoney, money, I know how to count it Money, money, money in my pocketMoney, money, I know how to count itMoney, money, money in my pocketMoney, money, I know how to count it  

Overview:This lesson includes instructions, a video, a short story, PowerPoint, and an image. The students will practice with the teacher using the PowerPoint to go over the analog clock, minute hand, hour hand, and practice telling time. After completing the PowerPoint, the students will practice with a small analog clock.

An interactive applet and associated web page that demonstrate the properties of a 30-60-90 triangle. The applet shows a right triangle that can be resized by dragging any vertex. As it is dragged, the remaining vertices change so that the triangle's angles remain 30 degrees, 60 degrees and 90 degrees The text on the page points out that the sides of a 30-60-90 triangle are always in the ratio of 1 : 2 : root 3 Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

This tool is used for teachers to understand what the students are getting out of their learning by recording three things they learned, two questions and one main idea.

Bring the vocabulary of film to life through the processes of filmmaking. Students learn terminology and techniques simultaneously as they plan, film, and edit a short video.

An interactive applet and associated web page that demonstrate the properties of a 3:4:5 triangle - one of the Pythagorean triples. The applet shows a right triangle that can be resized by dragging any vertex. As it is dragged, the remaining vertices change so that the triangle's side remain in the ration 3:4:5. The text on the page has an example of how the triangle can be used to measure a right angle on even large objects. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: A small square is a square unit. What is the area of this rectangle? Explain. What fraction of the area of each rectangle is shaded blue? Name the frac...

This task is related to Sub Claim C: Elapsed Time. Students are adding and subtracting time intervals on a number line. Standard 3.MD.1

This task challenges students to find the area of different sections of a garden and the entire garden. With missing lengths and widths, the students are challenged to apply computation skills to finding missing measurements.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Find the area of each colored figure. Each grid square is 1 inch long....

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

Write and/or solve linear equations in one variable.

b. Write and/or solve two-step equations of the form px + q = r and p(x + q) = r, where p, q and r are rational numbers, and interpret the meaning of the solution in the context of the problem.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Plot the following numbers on the number line: 80 328 791 1. Round each number to the nearest 100. How can you see this on the number line? 2. Round ea...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: There are 6 tables in Mrs. Potter's art classroom. There are 4 students sitting at each table. Each student has a box of 10 colored pencils. (A) How ma...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Plot 8, 32, and 79 on the number line. 1. Round each number to the nearest 10. How can you see this on the number line? 2. Round each number to the nea...

This number line task has students reason about which fractional distance is farther.

This flawed reasoning task provides practice for students to understand the size of the wholes must be equal in order to compare fractions.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Choose each statement that is true. $\frac34$ is greater than $\frac54$. $\frac54$ is greater than $\frac34$. $\frac34 \gt \frac54$. $\frac34 \lt \frac...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Choose each statement that is true. $\frac98$ is greater than $\frac{9}{4}$. $\frac{9}{4}$ is greater than $\frac98$. $\frac98 \gt \frac{9}{4}$. $\frac...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: The number line below shows two numbers, 0 and 1. Where is $\frac14$ on this number line? http://www.youtube.com/watch?v=HJ0LDgxVGfU...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: The number line below shows two numbers, 0 and $\frac53$. Where is 1 on this number line? http://www.youtube.com/watch?v=wAXRjMUgiu4...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: The number line below shows two numbers, 0 and 1. Where is $\frac74$ on this number line? http://www.youtube.com/watch?v=TEzH_PbHZIw...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Who correctly compares the numbers 2/3 and 2/5? Ben said that 2/3 is greater than 2/5. Lee said that 2/3 is equal to 2/5. Mia said that 2/3 is less tha...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Alec and Felix are brothers who go to different schools. The school day is just as long at Felix' school as at Alec's school. At Felix' school, there a...

This task is focused on Common Core Standards 3.OA.3 Students are applying understanding of multiplication concepts to solve a multi-step word problem related to a real life context. This is a good beginning task to help students show all their work using equations to represent the solution path for the task. It also helps students focus on precision as they need to represent the problem with the correct equations.

This task has student solve a two step word problem involving addition and division. Students identify flawed reasoning and provide a correct answer and explanation.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Tehya and Kenneth are trying to figure out which number could be placed in the box to make this equation true. Tehya insists that 12 is the only number...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Suppose there are 4 tanks and 3 fish in each tank. The total number of fish in this situation can be expressed as $4 \times 3 = 12$. Describe what is m...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Presley has 18 markers. Her teacher gives her three boxes and asks her to put an equal number of markers in each box. Anthony has 18 markers. His teach...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Mrs. Moore’s third grade class wants to go on a field trip to the science museum. * The cost of the trip is \$245. * The class can earn money by runnin...

This unit on American Indians: By studying the regions of the United States and the cultures that live in each region, students are able to compare/contrast within regions and across regions how tribes used their environments, and their cultural and other contributions to American life.

Note that the emphasis here is on broader groups of tribes for each region with some instruction on specific tribes representing each region. In no way is this case study approach to learning about one tribe meant to be generalized to all tribes of that region. We understand that each tribe was and continues to be unique in its culture, practices, lifeways, and traditions.

The unit is focused on the examination of geography in terms of “place.” Students dive into inquiry to answer the compelling questions, “Where are we?” and “Who are we?” Through these two questions students will understand where they live and where people around the world live. Students will also dive into the term “culture” and define it through many characteristics. Students will examine and reflect upon their own culture and research different cultures of North America.

Related to standard AR.Math.Content.3.MD.C.7., this is a multisection lesson for the 3rd grade unit of study on area in relation to multiplication, complete with teacher notes.This lesson is designed to be taught with an 'I Do, We Do, You Do' format. Starting with an introduction slideshow, students will connect multiplication with previous concepts and skills such as repeated addition, skip counting, and equal groups. Then they will see a video and example problems which can be completed together as a class. Allow time for students to read and complete some of these example problems with a partner which will give time for questioning, addressing misunderstandings, and informal interventions. End the lesson with a preview of the next day's independent activity and an exit ticket using a quick image. 

Looking for a quick tool and resource to help with reading fluency? Check out this fun and easy poem for fluency development. 

An interactive applet and associated web page that demonstrate the properties of a 45-45-90 isosceles right triangle. The applet shows a right triangle that can be resized by dragging any vertex. As it is dragged, the remaining vertices change so that the triangle's angles remain 45 degrees, 45 degrees and 90 degrees The text on the page points out that the sides of a 45-45-90 triangle are always in the ratio of 1 : 2 : root 2 Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.