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What's the Difference?
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In this sorting activity, learners play a game in which they try to identify the largest number of differences between two objects.

What Shape Is It?
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In this activity, learners determine the shape of an unseen object by bouncing a ball off the object.

Catapult
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In this activity, learners construct their own small catapults using simple materials. Learners follow visual instructions to build their launching device.

Illuminations on Rates of Reactions
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In this activity, learners investigate the speed of chemical reactions with light sticks. Learners discover that reactions can be sped up or slowed down due to temperature changes.

Construction and Destruction
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In this three/four-day lesson, learners calculate perimeters and areas and draw the castle plan to scale.

How to Learn Basic Shapes by Making a Shape Mobile
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In this activity, caregivers and young learners work together to craft and talk about shapes and relative positions of such shapes by creating a mobile.

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

Bouncing Balloons
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In this sports-themed engineering activity, learners create super bouncy balls out of balloons. Learners brainstorm, test their designs, and share results.

Crank It Up
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In this engineering activity, learners explore simple machines and then build cardboard automata using cams.

Parabola Basketball
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In this activity, learners build mini-basketball courts and explore the laws of physics. Learners discover that everything you throw or shoot on earth travels in a parabola.

Finding a Gene on the Chromosome Map
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In this activity, learners use pedigree and jigsaw puzzles to explore how scientists use genetic information from a family to identify a gene associated with a genetic disorder.

Dr. Vet: Noses, Ears, Legs and Eyes
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In this activity, learners practice counting and multiplication as they figure out how many animal body parts they have to examine as "Dr. Vet."

Exploring Structures
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This event guide features three related explorations in which learners investigate the following science concepts: how you design and build a structure helps determine how strong it will be; different

Stereoscope
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In this activity, learners construct a device that allows them to view 2-D images in 3-D.

Kaleidoscope
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In this activity, learners build inexpensive kaleidoscopes using transparency paper and foil (instead of mirrors).

Magnetic Marble Run
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Learners explore magnetism and motion as they build a simple marble run. Learners test different arrangements of plastic and cardboard tubes, bottles, and cups on a magnetic board.

Reusable Rockets
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This activity (located on page 3 of the PDF under GPS: Garbology Activity) is a full inquiry investigation into design optimization using recycled materials.

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.

Balloon Hovercraft
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In this activity (on page 2 of the PDF under GPS: Luge Activity), learners will construct a model hovercraft out of an empty spool and a piece of cardboard.

Make a Balloon-powered Nanorover
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In this activity, learners build a nanorover model using styrofoam meat trays and a balloon.