Who knew the sum of a number's digits gives such interesting information? The 18th installment of a 21-part module has scholars investigate division by three and nine. After looking at several examples, they develop divisibility tests...

Learn the ins and outs of matrix multiplication. After discovering the commutative property does not apply to matrix multiplication in a previous lesson in the series, pupils now test the associative and distributive properties. The...

Students examine credit cards. They explore the detrimental effects that result from debt and poor credit. Students analyze interest rates, minimum balances, and consumer debt. Students survey the benefits of credit cards.