Engineering Challenges for Elementary Kids

By James Rodriguez · October 14, 2026

Why Engineering Challenges?

Engineering challenges teach the design-build-test-improve cycle that real engineers use. Kids learn that failure is part of the process and that iteration leads to better solutions.

Challenge 1: Paper Bridge

Build a bridge using only paper and tape that spans 12 inches and holds as many coins as possible. Constraints teach creativity — kids discover that rolled paper tubes are much stronger than flat sheets.

Challenge 2: Egg Drop

Design a container that protects a raw egg dropped from 6 feet. Use limited materials (straws, tape, cotton balls, cardboard). Test from increasing heights. The engineering process: brainstorm, sketch, build, test, redesign.

Challenge 3: Tallest Tower

Build the tallest free-standing tower using spaghetti and marshmallows (or newspaper and tape). Measure height after 60 seconds. Discuss why wider bases and triangular supports create stronger structures.

Challenge 4: Marble Run

Create a marble track using cardboard tubes, tape, and recycled materials. The marble must travel from point A to point B with at least one turn, one loop, and one jump. Gravity is the only power source.

Challenge 5: Rubber Band Car

Build a car powered by rubber bands using cardboard, bottle caps, skewers, and rubber bands. Measure distance traveled. Experiment with wheel size, rubber band thickness, and car weight.

Challenge 6: Catapult

Build a catapult using popsicle sticks, rubber bands, and a plastic spoon. Launch mini marshmallows at a target. Measure accuracy and distance. Discuss force, leverage, and trajectory.