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Inflate-a-mole
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In this activity, learners conduct an experiment to find the volume of one mole of gas. Learners capture sublimated gas from dry ice in a ziploc bag and use water displacement to measure its volume.

Measuring Biodiversity
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Learners use a variety of beans to represent a variety of species, and scatter these beans over a large piece of paper representing the environment.

Breaking Point
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In this activity, learners build penetrometers to test leaf toughness. Biologists measure leaf toughness to study the feeding preferences of insects and bugs.

Meteoroids and the Craters They Make
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In this activity, learners investigate the formation of craters. Learners will examine how the size, angle and speed of a meteorite's impact affects the properties of craters.

Ramps 1: Let it Roll!
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In this activity about ramps, learners explore and measure the rate at which spherical objects roll down a ramp.

Twirling in the Breeze
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In this engineering activity, learners build a device (an anemometer) to measure how fast the wind is blowing.

Cardiac Hill
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In this outdoor activity linking human health to the environment, learners use their pulse rates as a measure of the effort expended in walking on different slopes.

Relative Speed of Dinosaurs
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In this activity, learners interpret three trackways and use measurements and a formula to infer the relative speed of dinosaurs.

Can Energy be Created or Destroyed?
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In this activity, learners explore conservation of energy by experimenting with a solar cell light device.

Atmosphere Composition Model
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In this activity, learners create a model using metric measuring tapes and atmosphere composition data.

Special Effects: Titanic and Beyond
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In this activity, learners investigate how geometry plays a role in perspective.

Test the Finger Wrinkle Hypothesis
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Learners create a tool to measure how well they grip a wet object when their fingers are smooth versus wrinkly. Are smooth or wrinkly fingers better at holding on to the object?

Build a Solar System
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In this activity, learners make a scale model of the Solar System and learn the real definition of "space." Learners use the online calculator to create an appropriate scale to use as a basis for thei
Soaring Towers: Building with Recycled Materials
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In this activity, learners will build the highest tower they can out of recycled materials.

Up, Up, and Away
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In this math lesson, learners explore the real world meaning of slope. Learners conduct a balloon experiment in which they measure the circumference and flight time of deflating balloons.
Investigating Density Currents
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In this lab activity, learners explore how to initiate a density current. Learners measure six flasks with different concentrations of salt and water (colored blue).

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.

Mass, Area, Volume
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In this activity (page 18 of PDF), learners will measure the volume of impact craters created by projectiles of different masses.