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This fun hands-on astronomy activity lets learners use star maps (included) to find constellations and to identify stars with extrasolar planets (Northern Hemisphere only, naked eye).

This lab activity has learners create a pendulum with a one-second period.

This activity uses Jell-O(R) to introduce learners to microfluidics, the flow of fluids through microscopic channels.

In this activity, learners will be introduced to citizen science projects that can be done from home.

In this group activity, learners will mark important developments of life on Earth on a timeline (each foot in length representing 200 million years).

In this activity, learners of all ages can become food scientists by experimenting with flour and water to make basic pasta.

In this math activity, based on the research of famed astronomer Frank Drake, learners calculate the possibilities of finding intelligent life elsewhere in the universe besides Earth.

Water treatment on a large scale enables the supply of clean drinking water to communities.

In this outdoor activity, learners cut through and investigate rotten logs and then make log-profile puzzles for each other.

This fun hands-on astronomy activity lets learners explore models of the Milky Way and other galaxies to get a sense of relative distances to other galaxies.

Professor John Endler traveled to Trinidad in the 1970s to study wild guppies. In this activity, learners take part in an online simulation of Endler's work.

In this activity, learners will explore globes of frozen water to learn how to ask and then answer 'investigable' questions. The activity web page includes a short video demonstration.

This series of chemistry stations is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Each of the six stations features either a chemical or p

In this activity, learners construct a coastal landmass from sand and add features such as tidal creeks and barrier islands.

Many of the genetic sequences found in the fruit fly genome are similar to those found in humans.

In this activity, learners identify different classes of matter based on physical properties.

This paper describes a working-model demonstration of Ernest Rutherford's 1911 experiment about the nature of atoms.

In this activity, learners determine the elastic and plastic properties of different types of metal wires.