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Off. Aaron Debbink Oak Hills High School. The Challenge Design an entertaining activity for our Classroom Off-the-Grid day that can be powered using only the electricity stored from a bicycle generator. The Problem

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  1. Off Aaron Debbink Oak Hills High School • The Challenge • Design an entertaining activity for our Classroom Off-the-Grid day that can be powered using only the electricity stored from a bicycle generator. • The Problem • In our modern world many people “consume” energy without an appreciation or awareness of the amount they use.As the population across the globe continues to rise, we need to find ways to rely more on renewable sources of energy. These sources of energy will only be viable if we can find ways to use this energy more efficiently. This design unit aims to give students an appreciation for and awareness of the electrical energy they “consume”. the Classroom • Guiding Questions • How can we determine the amount of energy that electronic devices use? • What is a Watt? • How much power can an average person produce while riding the bicycle generator? • What are students interested in doing for fun? • How do we estimate the amount of time we need to use the bike to charge the battery? Grid 10W 20W 600W R e a What is Human o n Pedal 300W ? r a e 60W Pow b Lesson 1 (Power Concept) Lesson 2 (Off the Grid Day) l e • Activity #3 (Off-the-Grid Proposal Design) • Students make initial proposal for OTG Day. • “Market research” performed through an online survey. • Students make revisions to their proposals based on the “market research”. • Activity #4 (Off-the-Grid Day Presentations) • Students make final proposal presentations. • Students charge the battery on the bicycle generator for their chosen activity. • Enjoy “Off-the-Grid” day! • Activity #1 (Human Power) • Introduces the power concept • Students measure personal power ratings while walking or running up stairs. • Activity #2 (Power Practice) • >Students practice solving problems involving the concept of power. 75W 42” LED 185W 80W CEEMSis supported by the National Science Foundation grant # 1102990.  Any opinions, findings, conclusions, and/or recommendations are those of the investigators and do not necessarily reflect the views of the Foundation. 

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