Get 25% off on my products at my TPT store — for two days only! Use promo code BTS20 at checkout. The sale ends on August 5th at 11:59pm ET.



^

The distributive property - a beginner video lesson

In this basic lesson I show several examples of using the distributive property of multiplication over addition, including an area model (rectangles). Lastly we even touch on using the distributive property "backwards", which is the process of factoring algebraic expressions.

I don't use any negative numbers in the expressions as this is meant as a simple, beginner lesson on this topic. Algebra and pre-algebra students will need to study the usage of the distributive property also with negative numbers - but they can start with this video lesson to get a solid understanding of the concept itself. For 6th grade math it's not necessary to learn the distributive property with negative numbers.

In the video, I first work out several simple examples such as simplifying 3(x + 5) and 5(2a + 7). Then, the area model has to do with a two or three-part rectangles. For example, the expression a(2 + b + 3) gives us the area of a rectangle with sides a and 2 + b + 3, but it is also composed of three smaller rectangles with areas 2a, ab, and 3a. It is easier to see in the actual visual model than by reading this. :)





See also

Math Mammoth Grade 7 curriculum (pre-algebra)

Back to pre-algebra videos index

Back to the index of all videos

WAIT!

Receive my monthly collection of math tips & resources directly in your inbox — and get a FREE Math Mammoth book! :)


We respect your email privacy.
You can unsubscribe at any time.

Math Mammoth Tour


Confused about the different options? Take a virtual email tour around Math Mammoth! You'll receive:

An initial email to download your GIFT of over 400 free worksheets and sample pages from my books. Six other "TOURSTOP" emails that explain the important things and commonly asked questions concerning Math Mammoth curriculum. (Find out the differences between all these different-colored series!)

This way, you'll have time to digest the information over one or two weeks, plus an opportunity to ask me personally about the curriculum.
A monthly collection of math teaching tips & Math Mammoth updates (unsubscribe any time)
We respect your email privacy.

Note: You will FIRST get an email that asks you to confirm your email address. If you cannot find this confirmation email, please check your SPAM/JUNK folder.

"Mini" Math Teaching Course


This is a little "virtual" 2-week course, where you will receive emails on important topics on teaching math, including:

- How to help a student who is behind
- Troubles with word problems
- Teaching multiplication tables
- Why fractions are so difficult
- The value of mistakes
- Should you use timed tests
- And more!

You will also receive:

A GIFT of over 400 free worksheets and sample pages from my books right in the very beginning. smile A monthly collection of math teaching tips & Math Mammoth updates (unsubscribe any time)
We respect your email privacy.

Note: You will FIRST get an email that asks you to confirm your email address. If you cannot find this confirmation email, please check your SPAM/JUNK folder.

Maria's Math Tips


Enter your email to receive math teaching tips, resources, Math Mammoth news & sales, humor, and more! I tend to send out these tips about once monthly, near the beginning of the month, but occasionally you may hear from me twice per month (and sometimes less often). smile

Peek at the previous tips here.

You will also receive:

  • A GIFT of over 400 free worksheets and sample pages from my books. smile
We respect your email privacy.