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Cup Towers
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In this activity, learners explore different ways to stack cups to meet a personal goal.

Cardboard Automata
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Cardboard Automata are a playful way to explore simple machine elements while creating a mechanical sculpture.

Lever Cowboy
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In this activity, learners build a figure that moves and "comes to life" when they pull its string.

Motor Bird
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In this activity, learners build a bird that flies in place with help from a motor, wire, and some straws.

Wingin' It
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Learners explore the Bernoulli effect by building an airfoil (airplane wing) and making it fly.

Sound Automata
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In this activity, learners build their own sound machines and explore the interplay of motion and sound.

Earthquake-Proof Buildings
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In this geology and engineering activity (page 7 of the PDF), learners build an earthquake simulator, then use it to test various building designs, exploring different materials, shapes, and design op

Echo Base Bobsleds
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The goal of this activity is to build a miniature bobsled that is either the fastest or the slowest. Learners use recycled materials to design, build, and test their bobsled on a bobsled track.

LEGO Robots
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This activity (on page 2 of the PDF under GEMS Activity) is a full inquiry investigation into technology design and testing.

Zipline
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In this design activity, learners create a vehicle that can transport a load, like a favorite toy or as a recycled object, from the top of a zipline to the bottom using only gravity.

Crazy About Kites
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In this activity, learners build a kite out of paper, change it, and try to make it fly even better. With their new knowledge of kite making, students can then go on to create their own kite designs.

Achieving Orbit
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In this Engineering Design Challenge activity, learners will use balloons to investigate how a multi-stage rocket, like that used in the Interstellar Boundary Explorer (IBEX) mission, can propel a sat

Trebuchet Toss
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In this activity, learners explore trebuchet design. Teams of learners construct trebuchets from everyday materials.

Robot Basketball
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In this activity, learners explore accuracy and precision.

Touch Down
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In this design challenge activity, learners build a shock-absorbing system that will protect two “astronauts” when they land.

Ships Ahoy!
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The goal of this activity is to design the fastest sailboat or one that carries the most treasure.

Interactive Gumball Machine
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In this activity, learners review the history of gumball machines and explore potential and kinetic energy, while working in teams to build a gumball slide.

Skewers and Garden Poles
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In this activity, learners build scaled-down structures and cantilevers in a series of "building out" challenges with bamboo skewers and tape.

Construction Technologies: Construct the Strongest Bridge
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Learners work in pairs to create three simple types of bridges, a beam bridge, an arch bridge, and a suspension bridge.

Design and Build a Better Candy Bag
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In this activity, learners explore how product design differences can affect the success of a final product -- in this case a bag for holding candy.