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In this demonstration, learners discover that nanoparticles behave differently, in part because they have a high surface area to volume ratio.

Create 3D glasses and use them to explore color, light and optics. Fool your brain into 'seeing' three dimensions on a flat surface!

In this activity, learners use multiple thermometers, placed at different angles, and a lamp to investigate why some places on Earth's surface are much hotter than others.

Fat is a very important component in our diet. It's the most efficient source of energy in our bodies, and plays an important role in the flavor of foods.

This fun and simple hands-on astronomy activity lets learners create 3D models of the Earth, Moon and Sun to demonstrate solar and lunar eclipses.

In this activity, learners of all ages will experiment with paint and printmaking.

In this activity, learners will build a simple electromagnet. They will test variables that would make the electromagnet stronger.

Using pipe cleaners, straws, and beads, learners explore the building blocks of life by creating their own model of DNA.

In this yummy biology activity (page 3 of the PDF), learners participate in a demonstration of natural selection.

This is an activity about lung capacity. Learners will measure their own lung capacity using a homemade spirometer.

In this activity, learners investigate how inkjet printers produce tiny, precise drops of ink.

This activity was designed for blind learners, but all types of learners can explore the three states of matter by examining tactile models that illustrate the characteristics of particles in each sta

Construct a simple battery that's able to power a small light or motor out of foil, salt water, and charcoal. A helpful video, produced by the Exploratorium, guides you along on this activity.

In this lab exercise, learners explore diffusion, cell membranes and particle size using beets and three alcohols.

In this activity (on pages 4-5), learners make fake snow by adding water to the super-absorbant chemical from diapers, sodium polyacrylate.

Make your own speaker with a magnet, wire, and paper cup! If you have a radio with a headphone plug and an old pair of headphones, this is a great tinkering activity.

This activity is about collecting and analyzing DNA as part of a criminal investigation.

In this activity, learners play a game that models what happens as stem cells differentiate into different cell types.

Working in small teams, learners try to build a satellite that can float for at least five seconds in the marked area of a vertical wind tube.

Build a catapult that transforms the potential energy of a twisted rubber band into kinetic energy. Experiment with design variations so that you can hit a target with a projectile.