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### 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.### 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.### The First Race

3-5

Again using the E-Example simulation, students will model multiplication facts on the number line and compare various representations.### 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.### Running Races

3-5

Students generate and compare paths which model given problem situations on graphing grids. ### 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.### 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.### 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.### 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).### 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.