Twenty-one pieces of tagboard can lead your class to a greater understanding of integers when you use them to form a human number line. After creating this math tool, two strategies for adding and subtracting will have your...

How can you measure the height of a tree or telephone pole with only a short measuring tape?  It's not a problem when you start by measuring your shadow and your height to create a ratio to use with taller objects. Additional...

Nothing says 21st century learning skills like an Internet-based collaborative learning lesson plan focused on using technology to compile and synthesize information. An embedded video shows you what collaborative learning in high school...

You class will read Cucumber Soup by Vickie Leigh Krudwig as an anticipatory set for this lesson on ratios. They make models of the insects in the story and then use them as a source of data for this ratio and proportion lesson. This...