Chemistry + Environmental Science
Make bioplastic from milk or starch
Make casein and starch plastics at home and test their strength and how they break down.
- Easy
- 1–2 weeks
- Under 250
606 projects · 13 streams · every class
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73 projects
Mechanical Engineering · Fluid Systems
Design a hydraulic arm from syringes
Build a three-joint arm moved by water-filled syringes that picks up and places an object.
- Easy
- 1–2 weeks
- 250–500
Statistics and Probability · Probability
Test the birthday paradox
Calculate and test the chance that two people in a group share a birthday.
- Easy
- 1–3 hours
- Free
Teaching and Learning · Teaching Aids
Build a teaching aid for a hard concept
Make a hands-on model that teaches one concept students usually get wrong, and test whether it works.
- Easy
- 1–2 weeks
- 250–500
Crops, Soil and Horticulture · Soil Studies
Test the soil of three fields or gardens
Compare soil texture, pH, organic matter and drainage at three sites and suggest suitable crops.
- Easy
- 2–7 days
- Under 250
Nutrition and Food · Diet Studies
Record and analyse your diet for a week
Keep a food diary for seven days and compare your intake with a balanced plate.
- Easy
- 2–7 days
- Free
Physics · Optics
Measure the speed of light with a chocolate bar
Find the wavelength of microwaves from melt spots on chocolate, then calculate the speed of light.
- Easy
- 1–3 hours
- Under 250
Psychology · Experiments
Test the Stroop effect
Time how long people take to name ink colours when the word says a different colour.
- Easy
- 2–7 days
- Free
Civil Engineering + Physics
Build and load-test a spaghetti bridge
Design a truss bridge from dry spaghetti and glue, then load it until it fails and compute its efficiency.
- Easy
- 2–7 days
- Under 250
Agri-business and Food Science + Biology
Test how storage affects fruit and vegetable shelf life
Store the same produce in five ways and record weight loss and spoilage.
- Easy
- 1–2 weeks
- Under 250
Pure Mathematics · Trigonometry
Measure heights with trigonometry
Make a clinometer and find the height of your school building, a tree and a tower.
- Easy
- 1 day
- Under 250
Cybersecurity + Pure Mathematics
Implement classic ciphers and break them
Write Caesar and substitution ciphers, then crack them with frequency analysis.
- Easy
- 2–7 days
- Free
Electrical Engineering + Physics
Build a simple electric motor and measure its speed
Wind a coil motor with a paper-clip cradle and test how turns and magnets change its speed.
- Easy
- 1 day
- Under 250
Electronics and Communication · Analog Circuits
Build a clap switch
Switch an LED or a low-voltage lamp on and off with a clap.
- Easy
- 2–7 days
- 250–500
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
Statistics and Probability · Probability
Estimate pi by dropping needles
Drop sticks on ruled paper, count how many cross a line and get an estimate of pi.
- Easy
- 1–3 hours
- Free
Robotics, IoT and Hardware · Arduino
Make a digital thermometer with a display
Read a temperature sensor and show the value on a small screen.
- Easy
- 2–7 days
- 500–1,000
Environmental Science · Climate
Calculate your household's carbon footprint
Collect a month of electricity, fuel, travel and food data and convert it into kilograms of carbon dioxide.
- Easy
- 2–7 days
- Free
Biology · Botany
Compare the stomata of different leaves
Take nail-polish peels of leaves and count stomata on upper and lower surfaces.
- Easy
- 1–3 hours
- Under 250
Marketing + Microeconomics
Test how price affects demand at a school stall
Sell the same snack at three prices on three days and plot the demand curve.
- Easy
- 2–7 days
- 250–500
Biology · Cell Biology
Observe osmosis in potato strips
Soak potato strips in salt solutions and find the concentration at which they neither gain nor lose mass.
- Easy
- 1 day
- Under 250
Mechanical Engineering + Physics
Build a mousetrap car and maximise its distance
Power a car with one mousetrap spring and tune the lever and wheels for distance.
- Easy
- 2–7 days
- 250–500
Chemistry · Physical Chemistry
Find how temperature changes reaction rate with antacid tablets
Time how long an effervescent tablet takes to dissolve at different water temperatures.
- Easy
- 1–3 hours
- Under 250
Biology + Sports and Exercise Science
Measure how exercise changes pulse rate and recovery
Record pulse before, during and after exercise for several volunteers and compare recovery times.
- Easy
- 1 day
- Free
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