Lesson 6: Distributive Property of Multiplication

Wrapping Up

Conclusion

Materials: counters (kit), drinking straw (kit), fine point dry-erase marker (kit), small sticky notes (kit), whiteboard (kit)
Write 5×12=(5×10)+(5×2) on the whiteboard, and ask your child to explain whether or not it's true. She should note that 10 and 2 add up to 12 and that this number sentence represents the distributive property of multiplication.

Now, allow your child to practice more with creating a large array using counters and then breaking it down into two smaller ones using a drinking straw. Give her small sticky notes so that she can write the corresponding number sentences as she works, and tell her to be sure to include addition and equal signs on separate sticky notes to show how all of the number sentences are related. Remind her that adding the two smaller numbers sentences (the ones for the smaller arrays) together should equal the larger number sentence (the one for the large array).

Learning Gates

Have your child take the Learning Gates quiz for this lesson.