Students first explore different materials to see what types reduce the most …
Students first explore different materials to see what types reduce the most amount of sound when placed in a box. Each group is assigned a different material and they fill their box with that specific material. Students measure the sound level of a tone playing from inside the box using a decibel reader from outside the box. Students share this data with the class and analyze which types of materials absorb the most sound and which reflect the most sound.
Global wind patterns are dictated by the movement of the Earth on …
Global wind patterns are dictated by the movement of the Earth on its axis and are significant factors in determining the climate for regions of the planet. Students learn how the Coriolis effect and Hadley convection cells determine the location of deserts on Earth. They manipulate inflated plastic globes to discover how the Coriolis effect drives wind clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere. Then they incorporate latitudinal differences onto this modeling exercise to understand why deserts form at 30 degrees north and south of the equator. Once students understand the importance of global winds, they discuss hydropower in the desert. They compare and contrast two case studies: China’s Three Gorges Dam, and Chile’s proposed plant in the Atacama Desert that would creatively use solar power to move seawater up to the top of a mountain so that it can flow back down and generate power. Students note the economic, environmental, cultural and social impacts, issues and benefits of both power plants. Then they reflect, write, debate and discuss their ideas and opinions using evidence from the case studies and their own research.
Student pairs design and construct small, wind-powered sail cars using limited quantities …
Student pairs design and construct small, wind-powered sail cars using limited quantities of drinking straws, masking tape, paper and beads. Teams compete to see which sail car travels the farthest when pushed by the wind (simulated by the use of an electric fan). Students learn about wind and kinetic and renewable energy, and follow the steps of the engineering design process to imagine, create, test, evaluate and refine their sail cars. This activity is part of a unit in which multiple activities are brought together for an all-day school/multi-school concluding “engineering field day” competition.
Student teams act as engineers and learn about systems thinking and scale …
Student teams act as engineers and learn about systems thinking and scale by reassembling the separated pages of the engaging picture book, “Zoom,” by Istvan Banyai. The book is a series of 31 wordless pictures that start very close-up and then zoom out—from a rooster’s comb to outer space. Like a movie camera, each subsequent page pulls back to reveal the context of the previous scene as something different than what you originally thought. When the 31 un-numbered pages are jumbled, it is a surprising challenge for teams to figure out how the pictures connect. The task prompts students to pause and look closer so as to adjust to new points of view and problem solve to find a logical sequence. It requires them to step back and take a broader view. Students learn that engineers work together as teams and look at things very closely so that they see different things and come up with more than one solution when problem solving. To conclude, students go outside and practice their skills by imagining and then drawing their own Zoom-like small booklet stories inspired by items found in nature. The classic duck/rabbit ambiguous drawing is provided as a kickoff visual aid.
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