I show a simple way to get the conversion factor between any two area units. For example, to find how many square inches is 1 square foot, first sketch a square foot (= a square with 1-foot sides). Then think how long the sides are in INCHES — in this case, they are 12 inches. Then it is simple to find the area of the square by multiplying 12 in × 12 in = 144 sq. in.
We use this simple idea to find, for example, the area of a square with 6-ft sides in square inches, or how many square yards are in a square miles. Not forgetting the metric units, I also show how to convert between square centimeters and square millimeters.
This way you won't be dependent on having the conversion factors on hand - as long as you can remember the factor between the corresponding units of length.
Area of parallelograms and triangles — video lesson
Back to the geometry videos index
Math Mammoth TourConfused 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 CourseThis 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 You will also receive: A GIFT of over 400 free worksheets and sample pages from my books right in the very beginning.![]() 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 TipsEnter 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). Peek at the previous tips here. You will also receive:
We respect your email privacy.
|