Solar Mobile

Solar Mobile Design Challenge - Construction

Grades:
6-8
Learning Goal(s):
Students brainstorm ideas and share with their group.Students draw and label Solar Mobile designs in Engineering Notebooks. Students research an aircraft to trace (if this was not accomplished in the Center of Gravity lesson) and trace the aircraft outline onto foam board. Students construct a solar circuit to power motors and propellers on a foam board aircraft and test multiple times before adding to the solar mobile stand. Students construct solar mobile stand and add their aircraft to a dowel attached to the central hub. Students work with a partner to balance each aircraft onto the mobile. Students test the mobile speed outside (depending on weather) and compare to speed under indoor light stands. After initial testing, students redesign circuits or mobile construction to optimize design. Students use hand-held devices to film their moving Mobiles to judge the machine’s speed. Students demonstrate how their Solar Mobile works and justify in writing why their mobile should be chosen for the Children’s Technology Museum. 
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Solar Mobile

Light Source Efficiency: Exploring Irradiance

Grades:
6-8
Learning Goal(s):
Using a Vernier Pyranometer, students will measure electromagnetic radiation in watts per square meter (W/m2 ). Students will compare Sunlight irradiance with various indoor lighting options. Students will make a recommendation as to the optimum indoor lighting for powering solar panels. 
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Solar Mobile

Exploring Center of Gravity

Grades:
6-8
Energy Content:
Learning Goal(s):
Students will observe a discrepant event and write down questions about what they observed. Students will participate in a variety of activities using a meter stick in order to experience and learn about center of gravity.Students will find the center of gravity of an irregular shaped paper object by using a plumb line. Students will apply the concept of Center of Gravity and find the center of their solar aircraft that is to be used on their solar mobile. 
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Lesson Number:
3
Author:
Kristy Schneider
Other Subjects Covered:
Estimated Activity Length:
2 hours
Solar Mobile

Exploring Circuits and Optimum Power

Grades:
6-8
Learning Goal(s):
Students build series circuits using “grain of wheat bulb” and LEDs powered by various low voltage solar panels. Students build parallel circuits using grain of wheat and LED bulbs powered by various low voltage solar panels. Students demonstrate and draw the energy transfer using solar energy. Students draw a circuit diagram of their final optimal circuit. Students design an optimal circuit model that will be used in their final project. 
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Solar Mobile

Solar Mobile Design Challenge Unit Plan

Grades:
6-8
Learning Goal(s):
Students will design circuits using various solar panels in order to power motors with propellers. Students will learn about solar energy transfer in order to power the motors on their solar aircraft.Students will research an aircraft and draw an outline of the aircraft onto foam board. Students will explore the concept of center of gravity. Students will test the efficiency of various light sources (incandescent, fluorescent, LED, halogen) for usage by a PV cell.Students will use their prior testing results and knowledge to engineer a solar-powered mobile. Students will work to transfer the most energy from the solar panels considering all the tested variables in order to power the fastest, most efficient mobile.Students will demonstrate and explain why their solar mobile should be chosen for the solar mobile display in the children’s museum. 
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Design a 50 Year Energy Plan

Diving into the Physics of Motors and Generators

Grades:
9-12
Learning Goal(s):
1. Through hands-on exploration, create a working speaker for a cellphone. 2. Use the creation of a speaker to observe as a model for the process of generating electrical current in a simple generator/motor. 
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Design a 50 Year Energy Plan

50 Year Energy Plan - Unit Plan

Grades:
9-12
Learning Goal(s):
Explore causes and effects of climate change as related to energy production. Develop a working understanding of varying stakeholder perspectives on the causes and effects of climate change. Through hands-on exploration, build a working speaker that can connect to a cellphone. Use DIY speakers as a model to observe the process of producing electrical currents with a simple generator. Design, build and refine a wind turbine to efficiently convert mechanical energy into electrical energy. Design, build and refine a system that is the most effective at converting the sunlight into electrical energy. Students develop models to study the relationship between the Earth’s atmospheric composition and the Earth’s surface temperatures using simple diagrams. Students reflect on the impact of energy sources and power production on the environment. Students utilize their knowledge of how energy generation processes impacts the environment to inform how and why they develop a 50-year Energy Plan for their local community. 
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Hot Pack

Engineering a Hot Pack

Grades:
7-8
Learning Goal(s):
Students will collect data to characterize a chemical reaction Students will identify the criteria and constraints of an engineering challenge. Students will design and build a hot pack that meets the criteria of the project. Students will collect data to support their proposed design. 
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Fuel Inquiry Poster

Fuels and PV Cells

Grades:
7-8
Learning Goal(s):
Students explore the conservation of mass in chemical reactions by observing and modeling combustion reactions and exploring the essential question/phenomena, “is all fire the same?” Students will use information resources and a 3D model of a PV cell to understand how solar modules generate electricity. “How do PV cells make electricity?”Students will construct circuits to explore PV modules and variables involved in powering devices. Students evaluate, revise, and justify the energy resources suggested on an emergency preparedness supply list. 
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