Percent Increase and Decrease Quiz

2+ results

Elementary STEM Challenge: Marshmallow Catapult Energy & Motion Activity | 3-5

Created by

Science Demo Guy STEM Challenges & Activities

⭐ NGSS Aligned STEM Activity | Printable, Digital, & Fully Editable | Updated for 2026Engage your students with this high-interest engineering challenge where they explore elastic potential energy and projectile motion. In this hands-on lab, students design and build a catapult using popsicle sticks, rubber bands, and a bottle cap to launch a mini marshmallow as far as possible. It is the perfect addition to any Elementary Physical Science, Energy, or Forces and Motion unit. Designed specific

3rd - 5th

Engineering, Science

NGSS

3-PS2-1

, 3-5-ETS1-3

, 3-5-ETS1-1

Also included in: Elementary STEM Challenges Bundle #2 | 16 Hands-On Activities (Grades 3-5)

STEM Activity Challenge Jumping Bugs K-2nd Grade

Created by

Science Demo Guy STEM Challenges & Activities

STEM Elementary Classroom ProjectThis activity involves putting an effervescent tablet inside a film canister with a little bit of water. As gas is produced, pressure will build in the film canister causing the cap to pop off. Students will color and tape a bug* of their choice to the bottom of the film canister and see how high their bug can go!!! The students can experiment with the amount of tablet and water to see what works best. *Bug illustrations are also included! This STEM Activity C

K - 2nd

Engineering, General Science

Also included in: Activity Challenges 16 Pack #1 (Elementary)