Environmental Science · Water
Build a rainwater harvesting model and size a real tank
Make a working roof-to-tank model and calculate how much rain your own roof could collect.
- Easy
- 2–7 days
- 250–500
606 projects · 13 streams · every class
What do you want to build?
8 projects
We couldn't find an exact match. These are the closest 8, found by leaving out the time limit.
Or look inTwo-subject projectsHelp me choose
Physics · Mechanics
Calibrate a spring and build a newton meter
Stretch a spring with known weights, plot the graph and turn it into a force meter you can use.
- Beginner
- 1–3 hours
- Under 250
Physics · Optics
Build a pinhole camera and find its magnification
Make a box camera with no lens and show that image size depends on object and screen distance.
- Beginner
- 1–3 hours
- Under 250
Crops, Soil and Horticulture + Biology
Compare organic and chemical fertiliser on plant growth
Grow the same plant with compost, chemical fertiliser and nothing, and compare height, leaves and yield.
- Easy
- 2–4 weeks
- 250–500
Biology · Plant Science
Study how light colour affects plant growth
Grow seedlings under red, blue, green and white light and compare height and leaf colour.
- Easy
- 2–4 weeks
- 250–500
Architecture and Interior Design + History
Build a model of a famous building
Research a landmark and build a scale model with a note on its structure and history.
- Easy
- 1–2 weeks
- 250–500
Behavioural and Cognitive Science + Biology
Measure reaction time and what affects it
Use the ruler-drop test to compare reaction times between hands, ages and times of day.
- Beginner
- 1 day
- Free
Environmental Science · Climate
Model the melting of ice caps and sea level
Show that melting land ice raises water level but melting floating ice does not.
- Beginner
- 1–3 hours
- Under 250
0 to compare
Compare