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Area Model of Multiplication

In this Area Model Multiplication video, Farmer Maslow takes us on a tour of his farm by the sea as he plants his new crops. While planting his field of green beans, he'll be showing us how to multiply two-digit by two-digit numbers using the area model. Also known as Partial Products Multiplication, using geometric models to show a deeper understanding of the mechanics of multiplication is something that is a regular part of Farmer Maslow's everyday life.

If you like our math joke located on the top right of this page, scroll down and steal it! We made it easy for you. (and, of course, you have our permission)

Area Model Song Lyrics:

A farmer was planting green beans
in fourteen rows of fifteen.
The area model is how he thought
about the number of plants he got.
First, he multiplied ten by ten
and wrote one hundred with his pad and pen.
Then he multiplied ten by five;
there were fifty more plants coming alive.
Then ten times four equals forty,
and just the bottom corner was empty.
So, he multiplied five by four
and ended up with twenty more.

Split up the place values in multiplication.
Multiply the tens to get the foundation.
Then the other place values get multiplied.
Add the partial products up, and check your work twice.

Then the farmer planted black beans
in twenty-two rows of fifteen.
To find out how many plants he had,
he drew the area model on his sketch pad.
He did twenty times ten and wrote two hundred down;
then ten times two, and twenty’s what he found.
Twenty times five was one hundred, and then,
five times two equaled ten.
He added two hundred, one hundred, twenty, and ten;
the sum was three [hundred] thirty; he checked it again.
So, there were three hundred thirty black beans
in twenty-two rows of fifteen.

Learn More

This song targets TEKS and Common Core learning standards from both 4th Grade and 5th Grade. Look into the relevant standards here, or dig deeper into area formulas here.

If you are interested in getting ideas on how to plan a robust standards-aligned telling time lesson, we recommend checking out Instructure's recommendations for common core standards 4.NBT.5, 5.NBT.2 and 5.NBT.5. These pages help break down standard language, lay out the grade-appropriate level of rigor for each concept, and offer a variety of suggestions for activities (lesson seeds) that help students achieve their learning targets.

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Steal Our Joke.

Area Model Math Joke by NUMBEROCK

Copy and paste the following text onto your teacher, school, or homeschool website to give your students a chuckle.