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### 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.### What's So Special About Triangles, Anyway?

3-5

Students explore ways of building different basic shapes from triangles. They also investigate the basic properties of triangles, as well as relationships among other basic geometric shapes.### What Does it Take to Construct a Triangle?

3-5

Students explore the importance of the side lengths of a triangle and when triangles can or cannot be constructed on the basis of these lengths.### How Many Triangles Can You Construct?

3-5, 6-8

Students identify patterns in a geometrical figure (based on triangles) and build a foundation for the understanding of fractals.### 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.### There is a Difference: Histograms vs. Bar Graphs

3-5, 6-8

Using data from the Internet, students summarize information about party affiliation and ages at inauguration of Presidents of the United States in frequency tables and graphs. This leads to a discussion about categorical data (party affiliations) vs. numerical data (inauguration ages) and histograms vs bar graphs.