How the Grinch Stole Christmas Heart Math Activity for Kids

Celebrate Christmas with a fun Grinch-inspired math activity! Kids will guess, count, and learn while enjoying this heartwarming holiday favorite.

Every Christmas, our family loves to snuggle up and read How the Grinch Stole Christmas! It’s one of those timeless stories that makes you laugh, teaches kindness, and reminds us all what the season is really about — love, joy, and hearts that grow three sizes bigger. 💚

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When it came time to create a Christmas-themed learning activity for our Book Based Children’s Activities I instantly knew which story I wanted to bring to life — The Grinch! Inspired by the Grinch’s heart that was “three sizes too small,” I designed a hands-on math activity that encourages kids to guess, count, compare, and think logically while having festive fun.

This activity is a perfect way to mix reading and math in a playful, story-inspired way. Whether you’re teaching at home or in the classroom, it’s easy to set up, adaptable for different ages, and sure to make little hearts (and brains!) grow with excitement.

Don’t miss this Grinch Inspired Craft and Free Printable Build The Grinch — another adorable way to bring this classic Christmas story to life through hands-on play and creativity!

How the Grinch Stole Christmas Math Activity (Estimation, Counting, December)

How the Grinch Stole Christmas: Guess & Count Math Activity

Supplies:

M&M’s (or other small candy or objects)

3 heart shaped cookie cutters of various sizes (Or just draw 3 hearts on a piece of paper)

Directions:

1. Guess how many M&Ms will fit into each heart and write the guesses down.

Before we guessed, I asked Ms. Tiger which heart was the largest, and which was the smallest. She hypothesized that the smallest heart would hold the least amount of candy, and the largest heart would hold the most. Then she made her guesses. Since this was her first time guessing and larger numbers are still abstract for her, her guesses seemed really random which is totally fine and part of the discovery process.

Some kids may want to count the M&Ms instead of guess. You may suggest having them close their eyes, and saying the first number that comes to mind. Being able to come up with a logical guess is a learned skill and this is a great first step.

2. Fill the hearts with M&Ms.

I suggest using less M&Ms if your kiddo is still learning large numbers. The first time we did this activity Ms. Tiger filled the hearts with a lot of candy. The next time we did it, we limited the amount of candy to make it easier.

3. Count each pile of M&Ms inside each heart and write the findings down. I suggest lining the M&Ms up in a line while counting them to make it easier for visual comparisons. Compare the actual number, to the guesses in step 1 and talk about the findings. This activity is not about being right or wrong, it’s just about observations and comparisons.We would say something like, “The small heart had more M&M’s then we guessed, the medium heart had less M&Ms then we guessed…”

Whenever candy is involved, my kids are all about whatever activity we are doing with this one being no exception. Hopefully your kiddos are just as motivated!

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How the Grinch Stole Christmas printable card

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