isabellehoag

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So far Isabelle Hoag has created 107 blog entries.

Why is 20% of 50 the same as 50% of 20?

The order of factors in multiplication doesn’t change the product. Encourage students to expand their understanding of the commutative property of multiplication to include percents. Even though the commutative property doesn’t apply to division and there is division in calculating percentages, x% of y will always equal y% of x. The swap always works and can be used to make mental calculations of percentages even easier. 

How Would Your Students Describe Equivalent Fractions?

How do you want your students to describe equivalent fractions? By rote definition memorized from the textbook? Nope! Wouldn't it be great if they used a combination of analogies, examples and counterexamples, as well as everyday language referencing various ways to model equivalence and sprinkled with academic vocabulary? 

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