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Education Development Center
Micro-Geography of the Number Line
Young mathematicians dive into the number line to discover decimals and how the numbers infinitely get smaller in between. They click the zoom button a few times and learn that the number line doesn't just stop at integers. Includes...
West Contra Costa Unified School District
Investigating the Discriminant
When is finding the discriminant enough? Using the quadratic formula helps find solutions to quadratic equations, but there are times when just using the discriminant is appropriate. Use this algebra II instructional activity to...
Federal Reserve Bank
Your Credit Report
What is your credit score? How do you find it? Help your pupils answer these questions and more. They will access their free credit report and then analyze its meaning.
Curated OER
Night Here, Day There
Explore astronomy with a lab sheet for fifth grade scientists. After reading a short explanation about the earth's rotation, they solve a word problem about the differences in times across the world. Next, they make a model of the solar...
Curated OER
My Shadow and Me
Practice making shadows with a kindergarten science experiment. After deciding which picture would represent the biggest shadow, kids use a flashlight to experiment with their own shadows. For extra fun, have kids mark their shadows...