|Name of Activity||Hover Crafts|
|Keywords||air resistance, design engineering, aeronautical engineering, wind, tunnel, fan|
|Grade Level||3, 4, 5, 6|
|Time||1 Hour Total|
|Brief Description||Given some basic household supplies (popsicle sticks, paper, foam, aluminum foil, straws, clothes pins, etc), students were asked to create a “hover craft” that could remain in the air inside a wind tunnel created using a tunnel and a fan.|
|Lesson Objectives:||-Emphasize the engineering design process and the need for testing and redesigning.
-Discuss and explore air resistance and forces.
|Materials Needed:||-wind tunnel
|Preparation and Set Up:||-Print out enough copies of the activity worksheet
-separate materials into bags will equal numbers of each material per group
-set up the wind tunnel by placing the tunnel on top of the fan and turning the fan on
|Necessary Background||-Discuss air resistance
-Discuss design engineering/aeronautical engineering
|Procedure||1. Explain the challenge–to create a hovercraft that stays in the air the longest. 2. Students draw initial designs and then discuss their designs in their groups. 3. Students combine ideas into one design and then may begin to build with the materials. 4. Students test and redesign throughout the class period evaluating what is working well and what isn’t. 5. The class discusses the best and worst pieces of their many designs and discusses why they might have worked/not worked.|
|Extensions:||To make the activity more difficult, you may give students fewer materials or give them a “budget” with which to “buy” materials.|
|Modifications:||It is important not to use too strong a fan or else no matter what they make, it will just fly out of the tunnel.|
|Umbrella Unit/Curriculum (if applicable)||Intro to Types of Engineering|
|Name of Activity||Light at the Beginning of the Tunnel|
|Keywords||NXT, car, light sensor, tunnel, drive, reverse, ambient light|
|Grade Level||4, 5, 6|
|Time||1 Hour Total|
|Brief Description||In this activity, students will build or be provided with a pre-built NXT car with a light
sensor attached. Students will program their NXT car to drive into a tunnel and then
reverse out of the tunnel when the ambient light gets too dark. The car will stop when
the ambient light increases and the car is out of the tunnel.
|Lesson Objectives:||- To program light sensors according to the ambient light in the surrounding environment.|
|Materials Needed:||- NXT Car.
- Light sensor.
- Computer running LEGO NXT software.
|Preparation and Set Up:||Set up computers running LEGO MINDSTORMS NXT Software.
Build a tunnel that is large enough for an NXT car to drive into.
Arrange students in pairs.
Distribute necessary materials.
|Necessary Background||This activity can be introduced as designing a safety feature for your car so that it does not drive into an unsafe, dark area.|
|Extensions or Modifications:||Have students program their car to stay in the tunnel, this can be related to an animal who cannot leave its home in broad daylight without being eaten.|