# Making a ten

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Making a 10 provides a technique to help students master single digit addition. The task is designed to help students visualize where the 10's are on a single digit addition table and explain why this is so. This knowledge can then be used to help them learn the addition table.

Material Type: Activity/Lab

Author: Illustrative Mathematics

# Cube definition and properties

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An interactive applet and associated web page that demonstrate the properties of a cube. A 3-D cube is shown in the applet which can be interactively manipulated using the mouse. Research has shown that some younger students have difficulty visualizing the parts of a 3D object that are hidden. To help with this, the student can rotate the cube in any axis simply by dragging it with the mouse. It can also be 'exploded' - where a slider gradually separates the faces to reveal the ones behind. The cube can also be made translucent so you see through it to the other side. Applet can be enlarged to full screen size for use with a classroom projector, and printed to make handouts. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Author: John Page

# Grubby's Wacky Worms

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Material Type: Lecture

Authors: U.S. Department of Education, WNET

# MD Delayed Gratification

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The purpose of this task is for students to compare two options for a prize where the value of one is given \$2 at a time, giving them an opportunity to "work with equal groups of objects to gain foundations for multiplication." This context also provides students with an introduction to the concept of delayed gratification, or resisting an immediate reward and waiting for a later reward, while working with money.

Material Type: Activity/Lab

Author: Illustrative Mathematics

# Jamir's Penny Jar

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The purpose of this task is to help students articulate their addition strategies and would be most appropriately used once students have a solid understanding of coin values.

Material Type: Activity/Lab

Author: Illustrative Mathematics

# Wild Wind

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Students will learn the difference between global, prevailing and local winds. In this activity, students will make a wind vane out of paper, a straw and a soda bottle and use it to measure wind direction over time. Finally, they will analyze their data to draw conclusions about the prevailing winds in their area.

Material Type: Activity/Lab, Lesson Plan

# Using Grouping to Count Quickly

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In this Cyberchase video segment, the CyberSquad helps the Fairy Tale people save their king by teaching them how to count quickly by grouping. ***Access to Teacher's Domain content now requires free login to PBS Learning Media.

Material Type: Lecture

Authors: U.S. Department of Education, WNET

# Exploring Place Value -- Race the Clock!

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Students will explore the concepts of place value using their bodies as tools. They will time themselves performing various kinesthetic tasks like jumping jacks and sit ups and use the numbers that they record from these activities in their exploration. Working in groups, they will practice adding and subtracting and comparing numbers. They will also come up with creative ways to represent numbers using the properties of operation and the rules of place value.

Material Type: Activity/Lab, Teaching/Learning Strategy

# One, Ten, and One Hundred More and Less

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This task acts as a bridge between understanding place value and using strategies based on place value for addition and subtraction.

Material Type: Activity/Lab

Author: Illustrative Mathematics

# Comparisons 1

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In this task students are required to compare numbers that are identified by word names and not just digits. The order of the numbers described in words are intentionally placed in a different order than their base-ten counterparts so that students need to think carefully about the value of the numbers.

Material Type: Activity/Lab

Author: Illustrative Mathematics

# Party Favors

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The point of this task is to emphasize the grouping structure of the base-ten number system, and in particular the crucial fact that 10 tens make 1 hundred.

Material Type: Activity/Lab

Author: Illustrative Mathematics

# Counting Stamps

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This is an instructional task related to deepening place-value concepts. The important piece of knowledge upon which students need to draw is that 10 tens is 1 hundred.

Material Type: Activity/Lab

Author: Illustrative Mathematics