Valentine’s Day Polygon Shapes Building Activity

Welcome back for another STEM Saturday! As many of you know, we are usually posting about our fun science and engineering projects, however this week we thought we would switch it up a tad and share this really fun Valentine’s Day math activity. If you have a first grader learning about polygons or any child learning about shapes, this is the perfect hands-on math lesson. We had a blast building these polygon shapes.

Valentines Day Math Building Polygons

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What is a Polygon?

If you have not ever heard the word or are unsure of a great definition for polygons, you are not alone. Many of us call these shapes and don’t ever go further than that. However, polygons allow you to teach children how to compare, contrast and classify by properties.

Polygon vs nonpolygon

When we start the lesson, we look at Polygon vs nonpolygon and discuss what we notice. I encourage my kids to come up with rules for polygons before I ever tell them what they are. If you are stumped on questions to ask to encourage thinking, you might like these 10 questions for any math lesson.

After discussing, sorting and creating a definition of polygons, we list what we know.


* Have straight Sides

* Are Closed Shapes

* Have Sides that Come Together at the Corner

Therefore, Polygons:

* No NOT have curved edges

* Do NOT intersect

* Are NOT Open

Now that your children have a better understanding of what a polygon is, its time to build something super fun and hands on to help them make connection and solidify their learning.

Building Valentine’s Day Polygon Shapes with Straws


Red, Pink or Black Paper Straws

Red, Pink, or White Pipe Cleaners

Set Up:

We set out the materials in cups on the table. I separated the different size straws to make it easier to create polygon shapes.

Polygon building with straws

Using the pipe cleaners, connect two of the straws together. This will be your CLOSED CORNER. The straws will be your STRAIGHT EDGES.

Making Shapes with straws

You can add as many sides (straws) as you want, as long as they are straight and connected.

Valentines Day Math Activity

Once you have completed putting the sides on, simply use one more pipe cleaner to close everything up.

Building Polygons with Straws

The possibilities are endless.

Investigating Polygons and Making Connections

Awesome Math Activity for Valentines Day

After you have made the polygons, have your children investigate what they have made. How many sides? How many edges? How many corners? Can they name the polygon?

Do you have a favorite hands-on math lesson?  I would love to know! Connect with me on FacebookTwitterGoogle+PinterestInstagram or subscribe by email. I can’t wait to hear your ideas.


STEM Activities for kids

Every Saturday we will get so many wonderful ideas linked up from around the web that we have decided we want to feature some of these great ideas. That’s why every Saturday, I will pick from the posts linked up and feature my absolute favorites. This might be a hard choice to make, luckily you can always head over to last week’s post and check out more great STEM resources!

This Week’s Feature: Math


Ten Frames | Sugar Aunts


Party Cloud Dough | Glittery Fizz from The Science Kiddo

Moon Math Game from Stir the Wonder

Follow Science Experiments for Kids on Pinterest.


Discover how to get siblings to get along even when all they do is annoy each other with the Sibling “Get Along” Poster Pack!

3 thoughts on “Valentine’s Day Polygon Shapes Building Activity”

  1. Pingback: Moon Math Game - Stir The Wonder

  2. Pingback: LEGO Valentine's Day Cards - Red Ted Art's Blog : Red Ted Art's Blog

  3. Pingback: Fun Valentine's Day Learning Activities with Free Printables

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