Physics · Fluid Mechanics
Build a hydraulic lift with syringes
Connect two syringes of different sizes and show how a small push lifts a large load.
- Easy
- 1 day
- Under 250
606 projects · 13 streams · every class
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33 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
Chemistry · Electrochemistry
Build a lemon battery and compare fruits
Make cells from fruit, zinc and copper, measure their voltage and light an LED with several in series.
- Easy
- 1–3 hours
- Under 250
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
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
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
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
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
Physics · Electromagnetism
Build a homopolar motor and measure what changes its speed
Make the simplest electric motor from a cell, a magnet and wire, then test how magnets change its speed.
- Easy
- 1–3 hours
- Under 250
Physics + Environmental Science
Build a solar oven and measure its efficiency
Make a box cooker from cardboard and foil and track how hot it gets compared with open air.
- Easy
- 1 day
- Under 250
Physics · Optics
Build a spectroscope from a CD and analyse light sources
Split light with a CD and compare the spectra of the Sun, LEDs, CFLs and flames.
- Easy
- 1 day
- Under 250
Biology · Molecular Biology
Build a DNA model and explain replication
Make a twistable DNA model with colour-coded bases and use it to demonstrate replication.
- Beginner
- 1 day
- Under 250
Astronomy and Space · Planetary Science
Build a scale model of the solar system on your street
Shrink the solar system so the Sun is a football and place the planets at true scale distances.
- Beginner
- 1 day
- Under 250
Astronomy and Space · Observational Astronomy
Make a model of the solar and lunar eclipses
Use a torch and two balls to show how the Moon's shadow and the Earth's shadow cause eclipses.
- Beginner
- 1 day
- Under 250
History · Ancient History
Build a museum exhibit on an ancient civilisation
Make a model town, artefact replicas and labels that explain daily life in one ancient city.
- Easy
- 1–2 weeks
- 250–500
Physics · Optics
Build a periscope and test the law of reflection
Make a periscope from card and two mirrors and show that both must sit at 45 degrees.
- Beginner
- 1–3 hours
- Under 250
Environmental Science · Water
Build a solar still to purify water
Make drinking-quality water from salty water with sunlight and measure how much you get.
- Easy
- 1 day
- Under 250
Electronics and Communication · Sensors
Make a water-level indicator
Light LEDs at quarter, half and full tank and sound a buzzer when it is about to overflow.
- Easy
- 2–7 days
- Under 250
Agri-business and Food Science + Biology
Make a dairy product and study the science
Set curd at different temperatures and with different starters and compare setting time and sourness.
- Easy
- 2–7 days
- Under 250
Biology · Human Physiology
Build a model of the lungs and measure lung capacity
Make a bell-jar lung model from a bottle and balloons, then measure real lung capacity by displacing water.
- Beginner
- 1–3 hours
- Under 250
Astronomy and Space · Rocketry
Build and launch a paper rocket with a stomp launcher
Launch paper rockets with compressed air and test how fins and nose shape change the distance.
- Easy
- 1 day
- Under 250
Physics · Electrostatics
Build an electroscope and test charges
Make a foil-leaf electroscope in a jar and use it to compare charged objects.
- Beginner
- 1–3 hours
- Under 250
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