Physics · Dynamics
Launch a water rocket and predict its range
Build a bottle rocket and find the water volume and angle that give the longest flight.
- Intermediate
- 2–7 days
- 250–500
606 projects · 13 streams · every class
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23 projects
Environmental Science + Electrical Engineering
Build a wind turbine and find the best blade design
Build a small wind turbine on a DC motor and test how blade number, angle and length change the voltage.
- Intermediate
- 1–2 weeks
- 250–500
Physics · Electromagnetism
Electromagnetic braking in a copper pipe
Time a magnet falling through copper, aluminium and plastic pipes and show how eddy currents slow it.
- Intermediate
- 2–7 days
- 250–500
Mechatronics and Robotics + Agricultural Technology
Automate a greenhouse model
Control a fan, a pump and a light in a model greenhouse from temperature, moisture and light readings.
- Intermediate
- 2–4 weeks
- 1,000–2,500
Materials, Energy and Other Branches + Environmental Science
Build a biogas digester model
Ferment kitchen waste in a sealed bottle and measure the gas collected over a month.
- Intermediate
- 2–4 weeks
- 250–500
Chemistry · Electrochemistry
Make an electroplating cell and copper-plate a key
Coat a steel key with copper and find how plating time changes the mass gained.
- Intermediate
- 1 day
- 250–500
Physics · Electromagnetism
Build a simple DC generator and light an LED
Wind a coil, spin magnets inside it and measure the voltage you generate.
- Intermediate
- 2–7 days
- 250–500
Civil Engineering + Robotics, IoT and Hardware
Build a model of a smart street light
Make street lights that switch on at dusk and brighten only when a vehicle passes.
- Intermediate
- 1–2 weeks
- 500–1,000
Mechanical Engineering · Machines
Design a gearbox and measure its speed ratios
Build a two-stage gear train and check the measured ratio against the tooth counts.
- Intermediate
- 1–2 weeks
- 250–500
Electrical Engineering + Physics
Build a wireless power transfer demo
Light an LED with no wire connection using two coils and an oscillator.
- Intermediate
- 2–7 days
- 250–500
Biology · Botany
Investigate transpiration with a simple potometer
Build a potometer from tubing and measure how wind, light and humidity change water uptake.
- Intermediate
- 1 day
- Under 250
Electrical Engineering · Power Systems
Model a power grid with series and parallel loads
Show why power is transmitted at high voltage using long thin wires and small bulbs.
- Intermediate
- 2–7 days
- 500–1,000
Earth Science · Seismology
Build a seismograph and record vibrations
Make a pen-and-weight seismograph that draws a trace when the table shakes.
- Intermediate
- 2–7 days
- Under 250
Mechanical Engineering · Fluid Systems
Build a model of a gear pump or centrifugal pump
Make a small centrifugal pump from a motor and a bottle cap and measure its flow at different heights.
- Intermediate
- 1–2 weeks
- 500–1,000
Chemical Engineering · Separation
Build a distillation column model
Separate coloured water from a salt solution by simple distillation and measure the recovery.
- Intermediate
- 1–2 weeks
- 250–500
Electronics and Communication · Communication Systems
Build an FM radio receiver
Assemble an FM receiver from a radio IC and tune in local stations.
- Intermediate
- 1–2 weeks
- 500–1,000
Mechanical Engineering + Environmental Science
Build a solar water heater
Make a flat-plate collector from black tubing and measure how much heat it captures.
- Intermediate
- 1–2 weeks
- 500–1,000
Crops, Soil and Horticulture + Biology
Study hydroponics against soil growing
Grow leafy plants in a simple water-based system and in soil and compare growth and water use.
- Intermediate
- 2–4 weeks
- 500–1,000
Electrical Engineering + Environmental Science
Generate electricity from a bicycle
Couple a DC motor to a bicycle wheel and measure the power a person can produce.
- Intermediate
- 1–2 weeks
- 1,000–2,500
Chemistry · Electrochemistry
Electrolyse water and collect the gases
Split water with a 9 V battery and show that hydrogen and oxygen form in a 2:1 ratio.
- Intermediate
- 1 day
- Under 250
Electrical Engineering · Generators
Make a hand-crank emergency torch
Build a torch that stores hand-cranked energy in a capacitor and lights an LED.
- Intermediate
- 1–2 weeks
- 500–1,000
Health Technology + Physics
Explain how an X-ray or ultrasound image is formed
Build a simple demonstration of shadow imaging and echo ranging to explain two medical scans.
- Intermediate
- 2–7 days
- Under 250
Biomedical Engineering · Biomechanics
Build a prosthetic hand model
Make a string-tendon hand from card and straws that grips objects.
- Intermediate
- 1–2 weeks
- 250–500
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