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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

Ripening of Fruits and Vegetables
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In this activity, learners test the rate of ripening fruit and vegetables and use a chemical to inhibit the ripening process.

Can You "See" Thermal Radiation?
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Use this hands-on activity to demonstrate infrared and thermal radiation.
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).

Masses & Springs
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In this online activity, learners use a realistic mass and spring laboratory. They hang masses from springs and adjust the spring stiffness and damping.

Breathing Blue
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In this activity, learners test exhaled breath for carbon dioxide and learn how to use an indicator as a simple way to measure pH.

What Causes Wind?
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In this sunny day experiment, learners measure and compare how quickly light and dark colored materials absorb heat.

Round & Round
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In this activity, learners make and test fly paper helicopters. Learners use templates to create paper helicopters and then take take turns flying them in the air.

Size it Up
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Learners investigate why the Sun and Moon appear the same size in the sky even though the Sun is over 400 times larger in diameter.

Sand Castle Saturation
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In this activity about saturation (page 1 of PDF under SciGirls Activity: Sand Dunes), learners will build a series of sand castle towers using a 16 oz cup.

Temperature Tactics
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In this activity, learners explore the devices used over time to measure changes in temperature.

Shadow Play
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In this three part activity, learners explore and experiment with shadows to learn about the Sun's relative motion in the sky.

How Thick is Your Hair?
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In this activity on page 13 of the PDF, learners use a laser pointer (with known wavelength of light) to measure the thickness of a human hair.

Breathing Room
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In this health activity, learners explore breathing, lungs and asthma. Learners test their lung capacity by blowing air into balloons.

Dinosaur Skull and Body Length Predictions
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In this activity (located on page 2 of PDF under GPS: Baby Dinosaurs Activity), learners will look for a relationship between skull size and body length among various dinosaurs.
Five Second Dash
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This is an activity about prediction. How far can you hop in 5 seconds? Could you make it to the door? Across the room? Everyone lines up and tries it.

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.

Gravity Fountains
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This activity (located on page 3 of the PDF under GPS: Glaciers Activity) is a full inquiry investigation into the forces of gravity and air pressure.

Carbon Sequestration
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In this inquiry-based lesson, learners measure the biomass of trees, calculate the carbon stored by the trees, and use this information to create recommendations about using trees for carbon sequestra

Leaf it to Me
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In this activity, learners observe the effect of transpiration as water is moved from the ground to the atmosphere.