In this activity, students create a model using metric measuring tapes and atmosphere composition data. Students will investigate the major components of the atmosphere (nitrogen and oxygen) as well as the minor components which raise questions about global warming and greenhouse gases.

In this activity, students use coins to model molecules and demonstrate how mass in conserved in a chemical reaction.

In this activity, students use water, a soda can, and a straw to create a thermometer.

In this activity, students investigate and demonstrate chemical change by hollowing out the interior of a penny by dissolving the zinc inside with toilet bowl cleaner. This acitvity pairs well with the activity "Physical Change - Pennies."

Students will learn about human color perception by using colored lights to make additive color mixtures.

Students will observe how changes in temperature cause objects to expand or contract.

Students will demonstrate how heating iron to a high temperature can cause it to lose his ability to be magnetized.

Students will rotate a flat shape into the third dimension to demonstrate bilateral symmetry.

In this activity, students explore how two cylinders that look the same may roll down a hill at different rates.

Students will explore sound by creating a "telephone" out of two empty yogurt cups and string.

In this activity, learners use rice grains to model the composition of the atmosphere of the Earth today and in 1880. Learners assemble the model while measuring percentages. This activity also introduces learners to greenhouse gases, infrared radiation, and global warming.

In this activity, students walk a path to help them visualize Earth's immense size and structure without the usual scale and ratio distortions.

In this activity, students use an energy drink can to investigate and calculate potential and kinetic energy.

Students will repeat patterns in two and three dimensions to create tessellations. This activity combines the creativity of an art project with the challenge of solving a puzzle. This lesson features three investigations that are appropriate for varying grades and levels.

This website provides background information, data, historical records, hands-on activities, and graphics/media about earthquakes.

In this activity, students investigate if steel wool will weigh more or less if burned and examine the chemical reaction involved.