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1000 Science Fair Projects with Complete Instructions

9 STEM Challenges

9 STEM Challenges

Challenge yourself to design the strongest bridge, the fastest balloon-powered car, the most protected egg drop or the paper airplane that flies the furthest with these STEM challenges! Put the engineering design process into practice as you apply STEM principles to rise up to the challenge! These projects are great for group STEM challenges, science fair projects, or even a weekend fun activity!

Paper Airplane Challenge
Let's see which paper airplane can fly the farthest! Fold, decorate, and launch your own planes to find the winning design.
Water Strider Challenge: Make a Bug Walk on Water!
Can you make a pipe cleaner foil bug walk on water? Find out with this engineering challenge by building your own water strider and exploring the science of surface tension.
Egg Drop Project: Protect the Egg!
Can you protect a raw egg from breaking when dropped from high up? Have fun in this engineering challenge!
Balloon-Powered Rocket Car
Build a rocket car that rolls across the floor using air from a balloon!
Comparing Bridge Strengths
Let's find out which bridge design can hold the most weight!
Building Strong Bridges
Learn how to build bridges that can hold a lot of weight using triangles and squares!
Which Bridge Design is Stronger?
Let's find out which type of bridge is the strongest out of three types of bridges!
Parachute Drop Velocity
How does the shape of a parachute affect its drop velocity? Find out in this science project!
Make a Parachute
Learn how to make a parachute and experiment with gravity!

The Engineering Design Process Guide

Learn the 6 steps of the engineering design process to make an effective solution to a problem, an example with the egg drop challenge & engineering challenges and science fair projects!

More related science projects

Balloons are not just for parties—they can also teach you a lot about science! Have fun exploring different gases inside balloons, powering a rocket car, or creating static electricity. Browse balloon projects.

Learn about acids and bases and explore acid-base science fair projects: make your own pH indicator, seashells with vinegar, acid on teeth & more! Browse acid and base projects.

Get ready to crack open a world of egg-citement with these incredible egg projects ranging from chemistry to engineering experiments! Browse egg projects.

Explore the wonder and excitement of these STEM projects! Each of these only need a few items you may have at home, so it's an easy and fun way to teach kids about STEM! Browse STEM projects.

Biology is the study of living things and how they work. Browse biology projects

Chemistry is the study of matter, which is everything around us! Explore different chemical reactions in these science projects! Browse chemistry projects.

Physics is the study of how the universe works. Discover the forces and motions that give rise to volcanic eruptions! Browse physics projects.

Engineering is all about solving problems using science and math. Browse engineering projects.

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