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Where Are the Distant Worlds? Star Maps
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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).

Find the Fat
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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.

Modeling Mendel's Pea Experiment
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This modeling activity allows learners to discover for themselves what Mendel uncovered in his famous pea experiments.

CD Spinner
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In this activity, learners create a simple “top” from a CD, marble and bottle cap, and use it as a spinning platform for a variety of illusion-generating patterns.

Two Washers
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In this activity, learners create a mind and math puzzle that requires a three-dimensional solution.

Making a One-Second Timer
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This lab activity has learners create a pendulum with a one-second period.

Modeling Limits to Cell Size
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This investigation provides learners with a hands-on activity that simulates the changing relationship of surface areas-to-volume for a growing cell.

Delta, Delta, Delta
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In this experiment, learners construct an equilateral triangle using graph paper, a pencil, protractor and ruler. They also make a "laser triangle" using a laser pointer and front-silvered mirrors.

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

Gumdrop Dome
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In this activity (located on pages 23-24 of the PDF), learners are introduced to structural engineering and encouraged to practice goal-oriented building.

Radioactive Decay of Candium
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In this simulation, learners use M&M™ candy to explore radioactive isotope decay.

Linear Functions: Mystery Liquids
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In this math lesson, learners analyze the density of liquids in order to explore linear functions.

Secret Codon
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In this activity, "write" a secret message in genetic code as beads on a string.

Wild Sourdough
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In this activity, learners explore chemistry and the microbial world by making their own sourdough starter and bread at home using only flour and water.

Animal House
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The goal of this activity is to design, build and test a house or toy for an animal.

Get the Porridge Just Right
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Learners set up three different bowls, each with a different mass of oatmeal. Learners monitor the temperature of the oatmeal and find that larger masses take longer to cool.

Lagging Sound
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In this group activity, learners see and hear the speed of sound. A learner designated the "gonger" hits a gong, once every second, as the rest of the group watches and listens from a distance.

How Big is Small
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In this classic hands-on activity, learners estimate the length of a molecule by floating a fatty acid (oleic acid) on water.

Ambiguous Cube
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In this activity, learners construct a three-dimensional ambiguous cube to explore visual illusions and how our brains interpret or misinterpret information.

Handwashing Laboratory Activities: Bowl Technique
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In this lab (Activity #2 on page), learners compare bacteria growth on two petri dishes containing nutrient agar. Learners touch the doors, faucets, etc.