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Algebra

Number Line Journeys

3-5
In this lesson, students generate products using a number line model. Students are encouraged to predict the products and to answer puzzles involving multiplication.
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Algebra

Setting the Pace

3-5
Students continue their investigation of modeling multiplication on the number line using the Distance-Speed-Time Simulation from the NCTM E-Examples.
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Algebra

The First Race

3-5
Again using the E-Example simulation, students will model multiplication facts on the number line and compare various representations.
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Algebra

Telling Racing Stories

3-5
In this lesson, students model races in which runners start from various positions. They enter numbers in a table of values, model races on a coordinate grid, and compare the results. Students begin to develop an understanding of linear relationships.
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Algebra

Running Races

3-5
Students generate and compare paths which model given problem situations on graphing grids.
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Algebra

Describe the Graph

3-5, 6-8
In this lesson students will review plotting points and labeling axis.  Students generate a set of random points all located within the first quadrant.  Students will plot and connect the points and then create a short story that could describe the graph.  Students must ensure that the graph is labeled correctly and that someone could recreate their graph from their story.
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Number and Operations

Exploring Krypto

3-5, 6-8
The rules of Krypto are amazingly simple — combine five numbers using the standard arithmetic operations to create a target number. Finding a solution to one of the more than 3 million possible combinations can be quite a challenge, but students love it. And you’ll love that the game helps to develop number sense, computational skill, and an understanding of the order of operations.
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Geometry

Multiply and Conquer

3-5
Students decompose 2-digit numbers, model area representations using the distributive property and partial product arrays, and align paper-and-pencil calculations with the arrays. The lessons provide conceptual understanding of what occurs in a 2-digit multiplication problem. Partial product models serve as transitions to understanding the standard multiplication algorithm.
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Algebra

Deep Sea Duel

3-5, 6-8
This strategy game requires you to select cards with a specified sum before your opponent (also available on iOS and Android).
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Data Analysis and Probability

Dynamic Paper

Pre-K-2, 3-5, 6-8, 9-12

Need a pentagonal pyramid that's six inches tall? Or a number line that goes from ‑18 to 32 by 5's? You can create all those things and more! Place the images you want, then export it as a PDF or as a JPG image.