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Pop Fly
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In this design challenge activity, learners invent a way to send a Ping-Pong ball flying high enough to catch it - like football with a twist!

Kicking Machine
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In this design challenge activity, learners build a machine that kicks a Ping-Pong ball into a cup lying on its side 12 inches away.

Paper Bridge
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In this engineering activity, challenge learners to construct a paper bridge that can support 100 pennies.

Electric Gamebox Challenge
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In this design challenge activity, learners invent a pinball-like game where a kick stick hits a ping pong ball into a target that buzzes.

Rubber Band Car
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In this design challenge activity, learners build a car that can travel at least four feet using rubber band power and use the design process to debug problems.

All Wound Up
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In this activity, learners build a racecar using only a rubber band, spool, straw, and paper clip! This racer is a classic toy that zips across a flat surface.

From Here to There
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In this water activity, learners discover ways to move water across the water table.

Sky Floater Challenge
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In this design challenge activity, learners make a balloon hover at eye level for five seconds, and then make it move by creating air currents.

Motorized Car
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In this design challenge activity, learners build a car that uses a battery-operated motor to "drive" at least ten feet.

Grab and Go
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In this engineering activity, learners design and build a mechanical arm to lift a small item.

Delivery Capsules
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Learners make self-assembled polymer spheres as a model for the lipid nanoparticles found in COVID-19 mRNA vaccines.

Water Wire: Electricity Flowing Through Water
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In this activity on page 10 of the PDF, learners detect the amount of energy that can flow through a sodium chloride electrolyte solution with a light sensor.

Salts & Solubility
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In this online interactive simulation, learners will add different salts to water and then watch the salts dissolve and achieve a dynamic equilibrium with solid precipitate.

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

Set It Straight
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In this activity, learners build a simple tabletop seesaw to test how different variables (the position of the fulcrum, distance, weight) affect its balance under increasing weight loads.

What Gives?
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In this activity, learners design, build and test a model suspension bridge for sturdiness and strength.

Deep Sea Diver
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In this ocean engineering activity, learners explore buoyancy and water displacement. Then, learners design models of deep sea divers that are neutrally buoyant.

Get-Moving Game
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In this invention challenge activity, learners create an indoor game for one or two people that gets you moving.

Helping Hand
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In this invention challenge activity, learners see how many objects they can grab with a homemade "bionic" arm.

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