Perimeter and Area

We finished our perimeter and area unit several weeks ago (right before fractions!), but I never got around to posting some of the engaging activities we did.  This was really a review for my kids, so it was fun to pull out some of the more inquiry-based activities and watch them go to town. Before we began our perimeter and area unit this year, I sent out this little teaser to my students via ClassDojo…

perimeter and area thematic unit

They spotted the hard hats and were hooked!  They couldn't wait to come to school and see what we were going to be doing with those hard hats.

Perimeter and Area Anchor Charts

It was a few days before we could really dive in, so we started our review by making this perimeter and area anchor chart.

perimeter and area anchor chart

We needed to review how to find perimeter and area of both regular irregular shapes, which is why there are two examples.

perimeter and area anchor chart

Perimeter and Area Book Tie-In Lesson

Then we did one of my all time favorite perimeter and area lessons. I LOVE it! We use Spaghetti and Meatballs for All by Marilyn Burns (Click the title to see my affiliate link on Amazon!). The book is all about how a family has a big spaghetti dinner and has to figure out how to seat all of the people invited with only 2 chairs. They try several different arrangements in the hilarious story, and all along the way, we chart the seating arrangements and compare the area and perimeter. The kids all have 8 tiles (the amount of tables they have) that they can manipulate as we read the story and then record it on our paper. There is a great free lesson at Beacon Learning (click here) that walks you through teaching it and also provides you with a worksheet similar to my anchor chart above. I have used this lesson with kids in grades 3-5, and I've never had a kid NOT love it and learn something from it. By the end, they are YELLING at the characters in the story trying to tell them how to arrange the chairs. Talk about engagement! The book also has great extension activities. At the end, I always ask my students to figure out how they could seat 12, 16, 24, etc. people, and they enjoy that part, too.

Perimeter and Area Math Project

Since this is such a great real-life concept to apply this skill to, I keep it going with my perimeter and area math project.

In this math project, the students have to build their own city. They start by laying it all out, then they “zoom in” on the buildings in separate guided tasks. I LOVE it! You can see the project HERE. This is where the hard hats came into play! This year, I decided to get them all hard hats from Oriental Trading, since they are tasked with being city planners. They were over the moon about these little hats and the project, and we had a blast with it.

This same project also includes a DIGITAL VERSION for more flexibility.

perimeter and area project

More Perimeter and Area Practice

Irregular Shapes

This index card activity is another one of my favorite activities for the older kiddos. I think I originally got some version of this idea from a Mailbox Tips magazine and then have adapted it over the years to meet my needs. It hits on so much…the relationship between area and perimeter, finding missing measurements, additive area, etc. And it's so easy… just whip out some index cards for groups of kids and have them find different combinations of cards to make different shapes. I require that one of the shapes by width to width and one of the shapes be length to length, and then the rest they get to configure any way they want. In the end, they realize that even if shapes have the same area, they can have a different perimeter. Again…this is a VERY valuable lesson when trying to teach missing measurement and area of irregular shapes. They know that every index card is a 3×5, so no matter (almost) how they put it together, they should be able to figure out all of the side lengths. I can't recommend this activity enough.

perimeter and area irregular shapes

I also blogged about using pentominoes to teach area and perimeter.  This is another great hands-on lesson for this skill, especially if you are tackling area and perimeter of irregular shapes! You can read more about this activity HERE!

Topple Blocks

Using these colorful Topple Blocks is another engaging way to practice perimeter and area skills. Each colored block has six questions. When a student pulls a certain color, their entire team must answer a question that corresponds to the color. So fun!

perimeter and area game

Candy Math

Who doesn't love Skittles?? You can use this Candy Math Packet to practice perimeter and area, along with dozens of other math skills too! I really like using this as a math center, but it works for test prep or assessments too.

Perimeter and Area Task Cards

And finally…would any of my math units feel complete without a good ole' set of task cards? Of course not! The kids finished these task cards as their assessment. I even have a few bonus cards in there for students to really show what they know. You can purchase these task cards HERE. They're also part of my huge perimeter and area bundle.

perimeter and area task cards

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