Taz

Science activities at home for anyone curious

Last updated: 12 October 2026

A useful science activity starts with a prediction and ends with an observation. In Taz's interactive 3D science labs, you change a setting, run an experiment and compare what happens. Taz is your personal STEM simulations engine, for anyone curious about STEM: adults, students and children, with explanations and experiments in the web browser.

Taz is currently open in India and the United States. A parent, guardian or other adult creates the account. Try the science labs on Taz

Does a longer pendulum swing take longer?

Open Simulations in Taz and choose Simple Pendulum. Predict what will happen when the string gets shorter. Run it, note the time for one swing, then change only the string length and run it again.

Ask afterwards: “Which setting did you change? What did you measure? Does the result match your prediction?” Repeat with the bob's mass while keeping the string length fixed. The lab times the simulated motion.

Why does a compass turn near a magnet?

Choose Magnet and Compasses. Predict which way the compass needles will point before turning the magnet. Change its direction and look for a pattern in the needles.

Ask afterwards: “Did every needle point the same way? What changed when the magnet turned?” Draw one before-and-after view. A drawing helps you describe an observation before asking Taz for an explanation.

Can white light become a rainbow?

Choose Prism Rainbow. Predict what light will look like after passing through the prism. Run the lab, then change the prism angle and compare the light's path.

Ask afterwards: “Which colours can you see? What changed when you changed the angle?” For an observation away from the screen, look for a rainbow in daylight through a suitable glass object with adult supervision. Never look directly at the sun or use a laser for this activity.

Keep the experiment small enough to explain

Browse the full lab list for forces, light, electricity, space and other subjects. You can also make a small game when they want a different kind of activity.

Common questions

Do we need to buy science equipment?

No equipment is required for the browser simulations. Real-world experiments have different materials and safety needs, so an adult should choose and supervise those separately.

How many lab sessions does each plan include?

Lab access depends on the plan you choose. Compare the current plans.

Do simulations replace real experiments or a teacher?

Simulations are simplified models that help you explore an idea. They do not replace every physical experiment, a teacher or adult supervision. AI explanations can be wrong; discuss unexpected results together and check them against a trusted learning source.

Labs to start with