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This is a hands-on activity that uses bread and household materials to grow mold. Learners collect dust from a room, wipe it on food, and contain it. One to seven days later, mold has grown.

In this activity (12th on the page), learners investigate their ability to discriminate (see) different colors.

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 science trick, learners get an egg to stand-up on its long-axis vertical to a table's top.

Do grapes, yes the grapes from the grocery store, move in the presence of a very strong magnet?

In this activity, learners thread gumdrops together to make a model of a polymer.

In this yummy chemistry activity which requires adult supervision, learners use sugar and water to explore how crystals form.

This is an activity about friction as well as kinetic and potential energy.

In this activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.

In this activity, learners make their own rock candy. Crystals will grow from a piece of string hanging in a cup of sugar water. The edible crystals may take up to a week to form.

In this activity about osmosis, learners use a naked egg (one with a dissolved eggshell) to learn about selectively permeable membranes.

This Exploratorium activity can be used in many contexts because geysers are great opportunities for learning about heat and temperature changes as well as geological/space science phenomena.

In this chemistry demonstration, learners investigate the factors that increase the rate of dissolution for a solid.

In this physics demonstration, learners are challenged to break a raw egg just by squeezing it. Learners will be shocked by their inability to complete the deceivingly simple challenge.

In this activity, learners investigate convection by using food coloring and water of different temperatures.

In this activity, learners use a flashlight, a glass of water, and some milk to examine why the sky is blue and sunsets are red.

In this activity, learners use marshmallows and gum drops to construct seven models of molecules. Learners classify (solid, liquid or gas) and draw diagrams of the molecules.

In this physics demonstration, learners will be surprised when a lemon slice appears to magically levitate within a pint glass.

This is an activity about acid-base reactions using eggs and vinegar. Learners place eggs inside a container of vinegar and leave to soak overnight.

In this activity, learners perform an experiment that models a chromatography-like process called electrophoresis, a process used to analyze DNA.