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Spring Scale Engineering
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In this activity, learners explore how spring scales work and how they are used for non-exact weight measurement.

A Towering Achievement
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In this experience, learners use the internet to research physical details about Chihuly's Fireworks of Glass "Tower" and "Ceiling" and consider the decisions Chihuly had to make as he was planning th

Making Sense of Sensors
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In this activity, learners explore sensors and focus specifically on how to measure humidity using a sensor.

Measuring the Wind
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In this activity, learners explore how anemometers work to record wind speeds and how the equipment has undergone engineering adaptations over time.

Topographic Investigation: Map an Underwater Surface
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In this activity, learners create a map of a hidden surface using a "sounding stick" -- a technique similar to how underwater maps were once made.

Measure the Pressure II: The "Dry" Barometer
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In this activity, learners use simple items to construct a device for indicating air pressure changes.

Airplane Wing Investigation
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This activity (located on page 3 of the PDF under GPS: Balloon Fiesta Activity) is a full inquiry investigation into Bernoulli’s principle and airplane wings.

Soccer Kicks
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This activity (on page 2 of the PDF under SciGirls Activity: Soccer Ball Kick) is a full inquiry investigation into transfer of motion.

Balancing Act
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In this activity, learners will build thier own balance scale. Learners will explore weight and comparison through this activity.

Guess the Sentence
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In this activity, learners play a game similar to Hangman by guessing a secret phrase to understand how computer scientists measure the amount of "information" in a document.

Exploring Size: Memory Game
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In this activity, learners play a card game that explores different size scales--macro, micro and nano.

Cutting it Down to Nano
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This simple activity uses paper and scissors to convey two key concepts to learners: the nanoscale is very small and working on the nanoscale requires special tools.

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.

Four Corners
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In this design challenge activity, learners build a machine out of cardboard that runs smoothly and dependably. Learners must be precise to make sure their component works properly.

Radar Mapping: What's in the Box?
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In this activity, learners mimic remote sensing. Learners use a stick to measure the distance to a "planet surface" they cannot see, and create their own map of the landscape.

Mold Growth
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In this activity learners observe mold growth on different types of bread by measuring and recording the growth rate.

Critical Load
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In this activity, learners explore the concepts of structural engineering and how to measure the critical load, or the maximum weight a structure can bear.

Finding the Size of the Sun and Moon
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In this activity, learners build a simple pinhole viewer. They use this apparatus to project images from a variety of light sources, including a candle, the Sun, and the Moon.

Finger Basketball
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In this activity, learners build mini-basketball courts using cardboard and measuring spoons. Use this activity to introduce learners to catapults, forces, and levers.

Smelly Balloons
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In this activity, learners sniff out scents hidden in balloons! After investigating, learners discover we sometimes can use another sense (smell) to detect things too small to see.