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Building the Promise of the Common Core Together

We provide educators with open source tools and resources needed to actively engage teachers in making education content localized and adapted to their own environments. Today, this means also being able to successfully build a practice around the Common Core. ISKME’s Open Author platform and evaluation rubrics allow curriculum leaders to gather Common Core aligned exemplars and frameworks for their teachers, while at the same time, allowing teachers to build and share high quality OER. Open education tools and resources provide educators with flexibility in instructional resource design necessary to build and sustain instructional shifts and practice around the Common Core.
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3.NF Fraction Comparisons With Pictures, Assessment Variation
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CC BY
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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...

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
03/18/2013
3.NF Snow Day
Unrestricted Use
CC BY
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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...

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
05/17/2013
3.OA.A.3 Modeling Multi-Step Problem_Derek's Cookout
Conditional Remix & Share Permitted
CC BY-NC-SA
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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.

Subject:
Education
Mathematics
Material Type:
Activity/Lab
Assessment
Homework/Assignment
Date Added:
08/09/2018
3.OA.D.8 Solving 2-Step Word Problems (Flawed Reasoning)_School Bake Sale
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CC BY-NC-SA
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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.

Subject:
Education
Mathematics
Material Type:
Activity/Lab
Assessment
Homework/Assignment
Date Added:
07/29/2018
3.OA Finding the unknown in a division equation
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CC BY
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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...

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
02/18/2014
3.OA Fish Tanks
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CC BY
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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...

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
08/13/2013
3.OA Markers in Boxes
Unrestricted Use
CC BY
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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...

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
09/07/2013
3.OA The Class Trip
Unrestricted Use
CC BY
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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...

Subject:
Mathematics
Material Type:
Activity/Lab
Provider:
Illustrative Mathematics
Provider Set:
Illustrative Mathematics
Author:
Illustrative Mathematics
Date Added:
03/24/2013
3rd Grade History Unit Design: Native Americans of North America
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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.

Subject:
Arts and Humanities
Cultural Geography
Education
Elementary Education
History
Social Science
U.S. History
World Cultures
Material Type:
Unit of Study
Author:
Leslie Heffernan
Date Added:
10/23/2019
3rd Grade History Unit: Geography & Cultures of North America
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CC BY
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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.

Subject:
Education
Elementary Education
Material Type:
Unit of Study
Provider:
Central Valley School District
Author:
Leslie Heffernan
Morgen Larsen
Date Added:
06/15/2018
3rd Grade Math, Area
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CC BY
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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. 

Subject:
Mathematics
Material Type:
Lesson
Lesson Plan
Teaching/Learning Strategy
Author:
Nicole Norris
Date Added:
07/07/2021
3rd Grade Reading For Fluency
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CC BY-NC
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Looking for a quick tool and resource to help with reading fluency? Check out this fun and easy poem for fluency development. 

Subject:
Elementary Education
Material Type:
Lesson Plan
Author:
ANDREW MCKENZIE
Date Added:
03/25/2022
45-45-90 triangle
Read the Fine Print
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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.

Subject:
Geometry
Mathematics
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011