Curated OER
Using Inverse Operations
Fourth graders demonstrate inverse operations by playing a card game. In this inverse operations lesson, 4th graders work in small groups with a deck of cards. Two players draw cards but do not look at them. The recording student...
Inside Mathematics
How Old Are They?
Here is a (great) lesson on using parentheses! The task requires the expression of ages using algebraic expressions, including the distributive property. Pupils use their expressions to determine the individual ages.