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In this math lesson, learners practice estimation and measurement skills as they move from station to station calculating length, volume, weight, and area.

This activity (aka "snack") provides instructions for discovering your blind spot. It is an exploration of light and visual perception using simple materials you may have around the house.

In this activity, learners create a kind of balance device using a wire coat hanger, some string, and paper cups.

This is a quick activity (on page 2 of the PDF under Gecko Feet Activity) about the forces of gravity and surface tension and how their behavior is influenced by size.

In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners.

Make a quick and easy filter from household materials. A filter will catch any solids suspended in a liquid and filter them out. By using a filter, learners can discover amazing things.

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 (on pages 19-24 of PDF), learners soak chicken bones or eggshells in vinegar for several days.

In this activity, learners use chocolate to explore how the Sun transfers heat to the Earth through radiation.

In this engineering activity, young learners investigate multi-level buildings.

In this activity and/or demonstration, learners illustrate visually and physically that air has weight. Learners balance two equally-inflated balloons hanging from string on a yard stick.

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

In this activity, learners create a straw oboe to explore sound and pitch.

In this activity, learners explore density and buoyancy as they design and construct rafts.

In this activity, learners investigate how changing the center of gravity of a balloon affects how it travels. Learners fill a balloon with a little bit of water and insert into an empty balloon.

Learners build at least two different spinners (tops) to investigate how mass distribution, size, and shape affect the length of time the spinner spins.

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

In this physics activity (page 5 of the PDF), learners will witness the effects of free fall by observing falling water, and will gain a better understanding of the concept of weightlessness.

In this design and physics challenge, learners construct a cylindrical wing, fly it, make modifications, and determine how the changes affect flight patterns.

How do you measure a bubble when it's floating? You can't really, but in this activity, learners can measure the diameter of the ring of suds a bubble leaves on a flat surface.