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Interactive
University of Colorado: Ph Et Interactive Simulations: Area Builder Interactive
University of Colorado

University of Colorado: Ph Et Interactive Simulations: Area Builder

For Students 3rd - 8th Standards
Create shapes using colorful blocks, and explore the relationship between perimeter and area. CCSS.Math.Content.3.MD.C.7.a Find the area of a rectangle with whole-number side lengths by tiling it
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Handout
National Museum of American History: Slates, Slide Rules and Software Handout
Smithsonian Institution

National Museum of American History: Slates, Slide Rules and Software

For Students 9th - 10th
Did you learn to calculate using a 7-foot-long slide rule? Did you learn about the properties of numbers using brightly colored Cuisenaire rods? Ever wonder who invented the graph paper you used in geometry class? Go back to the...
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