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
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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