Pumpkin STEM Structures

The kids LOVED using our STEM challenge cards to build toothpick and playdough structures a couple months ago so I was eager to pull out the activity again to make PUMPKIN STEM structures!

Grab your batch of toothpick STEM structure cards in our shop or on Teachers Pay Teachers!

Getting Ready

To prep, I printed the STEM challenge cards (available here) on cardstock to give them extra durability. Then I slid them through the laminator to make them reusable.

I grabbed our bag of candy pumpkins and a box of toothpicks and we were all set to dive in and start building.

Pumpkin STEM Structures

My son, Grant, was especially excited to jump in so he grabbed a card from the stack and started building his first 2-dimensional shape: a triangle.

The sugar pumpkins were heartier than the playdough we used last time so it took him a minute or two to get the hang of pushing just hard enough to stick the toothpick into the candy without breaking it.


Each time he finished a shape, we worked together to count the number of sides and vertices and then added them to our record sheet.


When he finished the stack of 2D shapes, he grabbed a couple of 3D shapes to try too.


The pumpkin STEM structures were just the right amount of challenge – not too easy or too hard.

Download Your STEM Challenges

Start building your batch of pumpkin STEM structures by grabbing the pack in our shop or on Teachers Pay Teachers!

PRO TIP: You’ll be able to swap the pumpkins out for marshmallow “snowballs” in winter and colorful jellybeans in spring.

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Hi, I’m Malia.

I LOVE helping Pre-K, Kindergarten and First Grade teachers save time, stay inspired and give EVERY student bigger results. I’m so glad you’re here!