Discover
Find experiments, STEM challenges, DIY builds and educational projects.
Discover. Build. Share.
Discover something. Build something. Learn something.
Explore hands-on experiments, STEM challenges, DIY builds and educational projects created by a growing community. Build them yourself, record what happens, and share your version with others.
Free projects available. Premium projects from independent creators coming soon.
Build
Follow structured instructions with materials, tools, photos and step-by-step guidance.
Document
Record measurements, observations, photos, costs and results in your own project workspace.
Share
Publish your own projects so others can build, reproduce, review and remix them.
Projects people are actually building
Explore projects created by the community and see what happens when other people build them.
The community library is just getting started — here are curated experiments you can build today.
BiologyEasy
Does sunlight affect plant growth?
Grow identical bean seedlings under different amounts of daily light and measure their height every day.
- Time
- 1 weeks
- Cost
- $8
- Grade
- 4–8
ChemistryEasy
Does water temperature affect dissolving speed?
Time how long sugar takes to fully dissolve in water at several temperatures.
- Time
- 1 day
- Cost
- $6
- Grade
- 4–8
PhysicsEasy
Which paper airplane design flies farthest?
Fold three plane designs from identical paper and measure flight distance across repeated throws.
- Time
- 1 day
- Cost
- $3
- Grade
- 4–9
PhysicsEasy
Does surface texture affect friction?
Roll a car down a fixed ramp onto different surfaces and measure the stopping distance.
- Time
- 1 day
- Cost
- $10
- Grade
- 4–8
PhysicsMedium
Which material provides the best insulation?
Wrap identical jars in different materials and track temperature loss over an hour.
- Time
- 1 day
- Cost
- $12
- Grade
- 5–10
Earth ScienceEasy
Does soil type affect water absorption?
Pour a measured amount of water through different soils and measure what drains out.
- Time
- 2 days
- Cost
- $12
- Grade
- 4–9
How it works
01
Find something interesting
Browse projects by subject, difficulty, cost, duration and more.
02
Build it yourself
Start a private project workspace and follow the structured instructions.
03
Record what happened
Add photos, observations, measurements and results.
04
Share what you learned
Publish your project or results and help the next person build it better.
Have something worth sharing?
Turn your experiment, build or project into a structured guide that others can follow.
Create your first projectPublishing free projects is always free for creators.
- Add materials and tools
- Create step-by-step instructions
- Upload photos of your build
- Add safety information
- Document your results
- Publish to the community
- Build a creator reputation
- Earn from premium projects (coming soon)
Your results are only the beginning.
Build the same project and see how your results compare with other builders. Every number shown on BestExperimentIdeas comes from a real logged build — never an estimate.
Your result
The measurements you record in your workspace
Community average
Calculated from every build logged for that project
Community builders
How many people have finished and reported back
Make it better. Then share it.
Found a project you like? Remix it, improve the instructions, change the design, test a new variable and publish your version — while preserving the original creator's attribution.
1. Original project
Published by a community creator
2. Your remix
Your improvements, credited back to the original
3. Community versions
Every variation stays linked and comparable
For everyone who builds
Students
Find projects, build them, collect real data, and learn by doing.
Parents & Educators
Find structured, reproducible projects that students can actually complete.
Creators & Makers
Share your projects with a community and eventually monetize your best work.
AI when you need a little help.
Your project assistant — not the person doing the project for you.
- Improve your research question
- Find missing materials
- Clarify an instruction
- Suggest measurements to record
- Help interpret your results
- Find projects using natural language
What will you build next?
Explore thousands of possibilities — or publish something of your own.