Arrays and multiplication

Currently we are studying multiplication of larger numbers and we are using an array (or area) model. This is preferred because it engages students in using the commutative and the distributive properties as they solve multiplication problems. Both of these reinforce and build algebraic thinking skills that your child will need in order to be successful middle school and beyond.

Here is what multiplication with an area model may look like:

Students will also learn the standard US algorithm for calculating single-digit and double-digit multiplication, but this method carries no mathematical significance beyond getting an answer. In fact, solely relying on the algorithm could set your child up for failure in algebra where they need to be able to use the skills illustrated above. So while we'll learn it (and we'll practice using it), the algorithm should be seen as the paper-and-pencil-calculator that it is.