In this physics activity, challenge learners to lift a book with just air using a plastic bag and a straw. This activity demonstrates compressed air and forces.

In this "Sid the Science Kid" activity, learners make applesauce to explore irreversible change. Learners compare and contrast apples that have been changed by heat with apples that haven't been changed. This activity includes a "Sid the Science Kid" video showing how to conduct the investigation. Safety note: adult supervision required.

In this activity, learners investigate whether more people are squares or rectangles. People with similarly sized heights and arm spans are classified as squares. People with different sized heights and arm spans are known as rectangles. Learners measure and analyze the body shapes of family and friends.

In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners. Even thought the pipe cleaners are the same length, learners will discover that one appears shorter than the other.

In this physics activity, challenge learners to make and race a balloon-powered car. Learners construct the body out of a paper cup, wheels out of wooden spools. and fuel tank out of a balloon. Demonstrate motion, forces, and kinetic and potential energy.

In this physics activity, challenge learners to make a race-car out of a coffee can and rubber band. Demonstrate motion, forces, kinetic and potential energy and friction.

In this activity, learners mix up a bubbly brew and examine density. Learners explore how they can make different materials fall and rise in water using oil, water, and salt. Learners can experiment using other materials like sugar and sand.

In this activity, explore chromatography and the various colors that make up the ink in markers. Use this activity to investigate cohesion and adhesion. The online version of this activity is set up so that learners solve a mystery.

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. soap and water. Use this activity to introduce the importance of hand-washing and cleanliness. This activity includes a "Sid the Science Kid" video showing how to conduct the investigation.

In this activity, learners mix water, cooking oil, and liquid food coloring to create beautiful colored designs in a cup. Use this activity to explore liquid density and solubility.

In this "Sid the Science Kid" activity, learners explore the effects of decay by comparing and contrasting something (an old pumpkin) that's decayed with the same thing before it changes (a fresh pumpkin). Use this activity during the Fall and Halloween! This activity includes a "Sid the Science Kid" video showing how to conduct the investigation.

In this health activity, learners create a device so that they not only feel their heartbeat, but also see it, using a straw and some clay. Learners calculate their pulse rate (beats per minute) while at rest and after exercise.

In this activity, challenge learners to predict and investigate how many water drops they can fit on one penny. Learners conduct the test three times to find the average number of drops they can fit on a penny. Learners then repeat this process using a nickel, dime, and quarter. Use this activity to demonstrate the principles of surface tension, adhesion/cohesion, and gravity.

In this activity, learners design a bungee jump for an egg using nylon stockings. Learners adhere to specific design constraints (egg must stop within 2 inches of the floor when dropped from 5 feet) and test their bungees.

In this activity, learners explore static electricity and electrical charges while experimenting with an inflated balloon, unflavored gelatin powder, and a wool sweater. Challenge learners to compare what happens when they use flavored gelatin or salt.

In this "Sid the Science Kid" activity, learners practice estimating numbers of objects (like shells) and then check their estimates by counting. This activity includes a "Sid the Science Kid" video showing how to conduct the investigation.

In this "Sid the Science Kid" activity, learners use their bodies to measure a room. Instead of inches or feet, how many kids does it take to measure the length of a room? This activity includes a "Sid the Science Kid" video showing how to conduct the investigation.

In this activity, learners construct and launch rockets using simple materials and their understanding of chemical reactions. Learners can experiment by modifying their rocket designs (shapes) or "fuel packets" (baking soda).

In this activity, learners make a foam packing peanut "flink"--neither float away nor sink--in water. Learners experiment with materials to make a Flinker that "flinks" for 10 seconds. Use this activity to introduce physics concepts related to gravity and buoyancy.

In this activity, challenge learners to float a paper clip in a cup of water. Learners discover that a paper clip will sink in a cup of water, except when it is placed on a piece of paper towel. Use this activity to demonstrate the principles of surface tension, adhesion/cohesion, and gravity.