Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Heat Transfer
Heat copper, iron, glass, and wood rods and move the heat source to see how conduction differs from convection.
Dissolution & Solutions
Spoon in salt, sugar, alum, or flour and change the temperature to compare how much dissolves in water.
Separating Mixtures
Choose a sieve, magnet, filter, or evaporation and watch the particles split into two bowls, discovering which property makes the separation work.
Levers and Pulleys
Move the fulcrum and switch pulley types to see how much less force is needed to lift a load.
Acids and Bases
Drop cabbage indicator into solutions and slide the pH to see how acids, neutrals, and bases each change color.
Sound & Vibration
Change frequency and amplitude to watch the waveform shift and hear how pitch and loudness change.
Buoyancy and Density
Change mass and size to adjust density and find out why objects float or sink.
Electric Circuits
Wire batteries, bulbs, and switches, then drop in conductors or insulators to find out what makes the light turn on.
Magnets and Compasses
Move a magnet around the compass and flip its poles to see when the needle is attracted and when it is repelled.
States of Water
Raise and lower the temperature to see how water turns into ice, liquid, or vapor and how its molecules move.
Light and Shadows
Move the sun across the sky and watch how a tree's shadow changes in direction and length.