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In this activity about olfaction (8th activity on the page), learners smell 10 different items with different odors. Then they try to identify the smells when they are mixed together.

Learners observe a bottle containing water and oil. They are invited to pick up the bottle and mix the contents together.

In this activity, learners will create glitter bottles with adult supervision. These are a fun way for little ones to practice observing and making comparisons.

Making liquids of different densities to perfectly lay on top of each other can be a frustrating exercise. The Exploratorium created this activity as a fool proof way of making a density column.

In this trick, hold your hand over a burning candle without getting burned, by reflecting and transmitting the light of two candles. This activity is best suited as a demonstration.

In this activity, learners will experiment with the physics of flight by making a gliding contraption with strange looking wings. The activity explores flight with connections to the natural world.

Create an instrument that you don't play--you just listen to it through tubes of various lengths.

Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

The Let's Do Chemistry "Build a Battery" activity lets participants learn how batteries work and how materials behave, change, and interact by building their own simple battery out of metal and felt w

In this activity, learners use heat to separate zinc and copper in a penny. This experiment demonstrates physical properties and how physical change (phase change) can be used to separate matter.

In this chemistry activity (on page 2 of the PDF), learners make a layered drink with liquids of different densities.

In this activity learners will explore the concepts of density and matter in their quest to answer one simple question-will it sink or will it float?

Focus sound through a balloon! In this Exploratorium activity, you'll use dry ice to create a balloon that's a sound lens.

This activity (9th activity on the page) about hearing demonstrates to learners the importance of having two ears.

In this demonstration, learners observe vinegar and baking soda reacting to form carbon dioxide (CO2) gas.

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

In this activity, learners work in pairs to measure each other's ankles with lengths of string.

Doctors often send a sample of blood to a lab, to make sure their patients are healthy.

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 is written as a display, but can easily be adapted to a hands-on activity. Learners observe and shake containers of shiny liquids.