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

Lesson Plan

Understand the commutative property by naming arrays

teaches Common Core State Standards CCSS.Math.Content.3.OA.B.5 http://corestandards.org/Math/Content/3/OA/B/5
Assign
  • Teaching notes

    Print all

    Click the "Begin lesson" button to view this lesson plan. Teaching notes for each slide will appear in this box.

  • Teaching notes

    Print all

    Play this video during the lesson or have students watch it before class.

  • Apply properties of operations as strategies to multiply and divide (3.OA.B.5)

    Apply properties of operations as strategies to multiply and divide.2 Examples: If 6 x 4 = 24 is known, then 4 x 6 = 24 is also known. (Commutative property of multiplication.) 3 x 5 x 2 can be found by 3 x 5 = 15, then 15 x 2 = 30, or by 5 x 2 = 10, then 3 x 10 = 30. (Associative property of multiplication.) Knowing that 8 x 5 = 40 and 8 x 2 = 16, one can find 8 x 7 as 8 x (5 + 2) = (8 x 5) + (8 x 2) = 40 + 16 = 56. (Distributive property.)

    Lessons

    Building Block Standards

     

    Teaching notes

    Print all
In this lesson, you will learn two ways to name a multiplication number sentence by counting the rows and columns of its array.

Are you sure you want to delete this item?

This change cannot be undone.

Re-order lesson plan cards

Drag and drop to re-order cards.

    ×

    We had a problem processing your request.

    We recommend copying and pasting any text changes somewhere safe, just in case we didn't capture them. Then please try submitting your request again.