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This Exploratorium activity explores size and scale. Through four levels of screen sizes, learners can sort out objects of different sizes.

In this activity, learners discover the primary physical properties used to separate pure substances from mixtures.

In this activity, learners explore their eye pupils and how they change.

In this activity, learners conduct a simple test to find their blind spot.

In this demonstration/activity, learners observe as a regular size marshmallow is blown through a tube made from a manila file folder.

Things that are different sizes and stiffness vibrate differently, and in this Exploratorium Science Snack, you'll see how rings of various diameters react to vibration and external forces.

This activity provides instructions for making an aircraft that can really fly using a straw and paper hoops!

In this activity related to light and perception, learners use a pinhole in an index card as a magnifying glass to help their eye focus on a nearby object.

In this activity, learners make or use pre-made clay beams to scale and proportion. Specifically, they discover that when you scale up proportionally (i.e.