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In this activity, learners will dissect a pumpkin or winter squash to learn the parts of the plant. This activity gets your learner hands on with every part of the plant and will be messy.

This activity has learners interacting with live crayfish, but could be adapted for a variety of similar hardy and interesting organisms.

DNA is the thread of life. Encoded in its genetic sequence is the information that makes each of us unique.

In this activity, learners will see how UV light affects colors over time by making their own sunprint on construction paper.

In this activity, learners will experiment with textures, shapes, and materials and create their own unique masterpieces.

This trick from Exploratorium physicist Paul Doherty lets you add together the bounces of two balls and send one ball flying.

This fun and simple hands-on astronomy activity demonstrates the shadow of the Earth as it rises as a dark blue shadow above the eastern horizon.

This hands-on astronomy activity allows you to create a “cutaway” telescope to clearly show how reflector and refractor telescopes work.

This is an educator-led demonstration of microarray technology using a model created from a pizza box and ping-pong balls.

This fun and simple hands-on astronomy activity lets learners explore the difference between telescope magnification and resolution.

In this activity, learners thread gumdrops together to make a model of a polymer.

In "Chemistry is Colorful" learners explore different materials through paper chromatography.

In this activity, learners cut out and assemble wheels to explore how variations in fish body structures (mouth shape/position/teeth, body shape, tail shape, and coloration patterns) allow fish to sur

In this hands-on activity, learners use an assortment of (mainly household) items to complete Rube Goldberg-type challenges.

In this activity (on page 5 of PDF), learners use dry ice and household materials to make scientifically accurate models of comets.

In this activity, learners look at and touch marine animal skulls to compare them and think about what they eat.

In this activity/demo, learners are introduced to the connection between medieval stained glass artisans and nanotechnology.

Use this Moon Map Guide to help learners identify features on the Moon, while looking through a telescope.

In this activity, learners are challenged to calculate their own weight on various planets using a scale and calculator. Older learners may be challenged to do so without using calculators.

A design challenge that takes paper airplanes into an entirely different direction: a magnus glider uses cups and and rubber bands to create a glider that uses the same forces that a curveball (from b