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In this activity, learners will see how UV light affects colors over time by making their own sunprint on construction paper.

This game for one to four players uses a deck of cards to develop mental addition skills.

In this activity, learners will experiment with textures, shapes, and materials and create their own unique masterpieces.

In this activity on page 6 of the PDF (Chemistry—It’s Elemental), learners explore some of the properties of copper using a few common household ingredients.

This activity demonstrates liquefaction, the process by which some soils lose their solidity during an earthquake.

In this biology activity (page 8 of the PDF), learners will explore how saliva assists in the beginning of the digestive process.

This trick from Exploratorium physicist Paul Doherty lets you add together the bounces of two balls and send one ball flying.

In this activity (located on page 10 of the PDF), learners explore the properties of spraying and dripping water, while making art.

This activity is on page 8 of the pdf, part of the Sea Life Discovery Box. This is an activity exploring the characteristics of fish.

In this design challenge activity, learners invent a device that will make their friends and family ask, "What's buzzing?" Learners design an alarm with an on/off switch that is small enough to hide.

In this demonstration/experiment, learners discover that different colors and materials (metals, fabrics, paints) radiate different amounts of energy and therefore, cool at different rates.

It's difficult to see convection currents in any liquid that's undergoing a temperature change, but in this Exploratorium Science Snack, you can see the currents with the help of food coloring.

In this activity about magnetism (page 15 of the PDF), learners will explore how opposite and similar magnetic poles affect a swinging (pendulum) magnet.

This fun and simple hands-on astronomy activity demonstrates the shadow of the Earth as it rises as a dark blue shadow above the eastern horizon.

In this "Sid the Science Kid" activity, learners get their hands dirty by playing in a container of soil. Then they compare the effectiveness of cleaning their hands with just a paper towel vs.

In this optics activity, learners conduct an experiment to find out why two eyes are better than one!

In this activity, young learners use their sense of touch rather than sight to identify a mystery object in a bag. Learners take turns acting as "peekers" and "sensers" throughout the game.

In this activity, learners explore geometry and spatial relationships as they figure out how to arrange tables for a party.

This hands-on astronomy activity allows you to create a “cutaway” telescope to clearly show how reflector and refractor telescopes work.

In this activity (9th activity on the page), learners work in pairs to see how their perception of touch differs from reality.