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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.
Dowels and Rubber Bands I
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If you have 3-foot dowels and rubber bands, you can can started on this fun and open design challenge. You can make structures big and small: make it so you can fit your parent into it!

Pendulum Time
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In this activity, learners explore how the pendulum has been a reliable way to keep time for centuries.

Arduino Blink Challenge
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In this activity, learners explore computer programming and the impact of computers on society. Learners build and test a program to turn a light on and off using an Arduino board.

Chair Lift Challenge
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In this activity, learners explore the unique challenges in transportation engineering, such as devising a method for skiers or hikers to get to the top of a mountain.

Hot Air
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In this activity, learners set up an experiment to investigate the effects of hot air on the path of a laser beam.

Spectroscope
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In this activity, learners construct their own spectroscope as they explore and observe spectra from familiar light sources.

Tall Tower Challenge
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In this activity, learners explore the design of tall structures such as skyscrapers and telecommunication towers.

Overnight Painting Machine: Pico Cricket Activity
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This activity requires a Pico Cricket (tiny computer).

Build a Better Roof
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In this activity, learners will engineer a roof using simple materials to protect a construction paper person from a rainstorm.

Dispenser Designs
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In this activity, learners explore how engineers work in a team to solve problems.

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

Launch Altitude Tracker
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In this activity, learners construct hand-held altitude trackers. The device is a sighting tube with a marked water level that permits measurement of the inclination of the tube.

Using Ohm's Law to Build a Voltage Divider
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In this activity, learners apply Ohm’s Law to construct voltage divider circuits. Learners discover how to read resistor codes and calculate resistor values.

A Question of Balance
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In this activity, learners explore how engineers use scales and measures when designing a manufacturing process to ensure that final products are uniform in weight or count.

Can You Copperplate?
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In this activity, learners explore chemical engineering and how the processes of chemical plating and electroplating have impacted many industries.

Roller Coasters
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In this activity learners will build roller coasters and test them using small balls or marbles.

Wandering Wands
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In this activity, learners construct wands that play different notes depending on information from light sensors programmed via a PICO Cricket.

Crystal Packin' Mama
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In this activity, learners investigate the basic crystal structures that metal atoms form.

Feel the Heat
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In this design challenge activity, learners design and build a solar hot water heater. Their goal is to create a heater that yields the highest temperature change.