Measurement

Trace your shadow, then make it change.

El hilo y las tijeras son todo lo que necesitas para encontrar el número pi a tu alrededor.

Sustituye monedas por radiación.

Use straight lines to learn about circles.

String and scissors are all you need to find pi all around you.

Use your cell phone to explore the mini-scopic world.

How far can you see into the water?

Have a gas with the conservation of mass.

See yourself with infrared vision.

As a task becomes more complex, it requires more mental effort—and that takes time.

Stamp your feet and make a miniature earthquake.

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