Your device is currently offline. You can view downloaded files in My Downloads.

Lesson Plan

1. Order of Factors in Multiplication (C)

teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
teaches Common Core State Standards CCSS.Math.Content.3.OA.B.5 http://corestandards.org/Math/Content/3/OA/B/5
Quick Assign

You have saved this lesson!

Here's where you can access your saved items.

Dismiss

Card of

or to view additional materials

You'll gain access to interventions, extensions, task implementation guides, and more for this lesson.

Lesson objective: Extend understanding that the order of two factors can be switched while still having the same product.

Students bring prior knowledge of multiplication from 3.OA.7. and 3.OA.A.3. This prior knowledge is extended to the commutative property as students explore what happens to an array when the factors are switched. A conceptual challenge students may encounter is thinking that this concept can be applied to division. 

The concept is developed through work with arrays, which can be turned to show that the number of items remain the same.

This work helps students deepen their understanding of operations because students multiply two factors in different ways.

Students engage in Mathematical Practice 7 (Look for and make use of structure) as they use arrays to represent how two factors can be switched while keeping the same product.

Key vocabulary:

  • arrays
  • equation
  • factor
  • multiplication
  • number line
  • product

Special materials needed:

  • objects (such as square tiles) to create arrays (if needed)
  • paper
  • pencil
Related content

Appears in

Developing strategies for multiplication and division

Provide feedback