Car Charger Schematic

DC to AC to DC Efficiency

Grades:
7-12
Unit:
Lesson Number:
5
Description:

This is part of the Off the Grid Unit. This lesson will continue to deal with efficiency of USB charging devices, but this time we will be using an inverter in order to create AC voltage from a battery pack, and then use a standard AC charger (what you...

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Learning Goal(s):
1. Students will use multimeters to measure voltage and current in circuits. 2. Students will use collected data and be able to make power calculations from this data. 3. Students will also be able to calculate efficiency from their power calculations. 4. Students will be able to compare efficiencies in order to identify the circuit that is most efficient. 5. Students will be able to make circuits from a diagram and vice versa. 6. Students will know what an inverter is and what it does.
Pedagogy & Practice:
Author:
Brett McFarland
Relevant NGSS PE:
Other Subjects Covered:
Estimated Activity Length:
3 hours

Using Multiple Solar Modules

Grades:
3-5
Lesson Number:
5
Description:

Students first explore with 0.5 Volt solar cells to see whether adding cells to a circuit increases the amount of water pumped by a small pump. They are introduced to parallel and series wiring. They then design and carry out a formal experiment to test...

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Learning Goal(s):
Students will apply scientific ideas to design and test a solar powered water pump that moves water at the fastest rate. Students will experiment and build understanding of parallel and series wiring and how energy moves in these circuits. Students will record data accurately into a table.
Author:
Leah Gorman
Relevant NGSS PE:
Estimated Activity Length:
3 hours

Part 2 - Lesson 2: Wind Energy

Grades:
6-12
Lesson Number:
5
Description:

Students will learn about wind and how wind varies across geographies. Students will use Vernier Wind Turbine kits or homemade wind turbines to experiment with blade angles and wind speed. During experimentation, students will collect data as blade angles...

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Learning Goal(s):
1.Students will conduct an experiment where blade angles are the variable and wind speed is constant.2.Students will conduct an experiment where blade angles are constant and wind speed varies.3.Students will collect and analyze data to provide a conclusion to the questions: What is the optimal blade angle for generating the most energy? What is the optimal wind speed for generating the most energy?4.Students will research prevailing winds and use a provided map of their region to indicate wind speed and direction.5.Students will propose locations for wind farms based on optimal energy generation and zoning restrictions.6.Based on their proposals, students will determine a range of potential kilowatt generation from wind power.
Author:
Jonathan Strunin
Estimated Activity Length:
10 hours

Cost Effective Solar Cells: Copper Oxide Solar Cell Construction and Testing

Grades:
9-12
Lesson Number:
5
Description:

This lesson is designed to be completed in one 80-minute section, but can be done in two 40-minute sections. The teacher will facilitate student construction of copper oxide plates with electric burners or hot plates. Teachers will guide students in...

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Learning Goal(s):
Students will construct an oxidized copper sheet solar cell Students will test an oxidized copper sheet solar cell for voltage and current
Author:
Tom Wolverton
Estimated Activity Length:
2 hours
Kill-a-Watt Meter

Home Energy Use

Grades:
4-5
Lesson Number:
6
Description:

This lesson is meant to provide students the opportunity to learn about the power usage of items in their home that they are already curious about. Students will learn to use a Watt meter to measure the amount of electricity various electric appliances in...

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Learning Goal(s):
Students will make observations and record about the amount of energy used by various appliances in their home. Students will make conclusions about which items in their home are generating the most energy. Students will make conclusions about methods in which they can reduce the energy used in their homes.
Author:
Eric Gronseth
Relevant NGSS PE:
Estimated Activity Length:
40 min
Solar Circuit

Variables Affecting Solar Power

Grades:
7-8
Lesson Number:
6
Description:

Students will plan and condict an investigation into solar photovoltaic technologies to determine what variables affect the output of panels. They will calculate and compare their exploration of solar panels to their previous investigation of wind turbines...

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Learning Goal(s):
• Students will be able to identify and explain at least three variables that effect the efficiency of photovoltaic cells • Students will conduct a scientific investigation to determine which photovoltaic cell configuration will generate the most power.
Author:
Craig Marais
Estimated Activity Length:
2 hours

Solar Boat Science Investigation

Grades:
4-6
Unit:
Lesson Number:
6
Description:

Design a science investigation to test a solar speedboat, airboat, and surface submarine. Students will use the “Planning an Investigation Template” in order to determine their motivations for designing a solar boat, make predictions about the outcomes...

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Learning Goal(s):
Students will design an investigation to test three models of solar vehicles. Students will justify which materials will be used in their construction. Students will be able to support their design with reasoning. Students will determine different methods of collecting data from their experiment relating to three types of solar boats.
Author:
Carol Patrick
Other Subjects Covered:
Estimated Activity Length:
50 min
Sphero SPRK+

Solar SPRK+: Final Challenge and Presentation

Grades:
6-8
Unit:
Lesson Number:
6
Description:

In this lesson, students will navigate through a maze using their SPRK+ in order to reach the solar charging station. Students will redesign their chariot in order to meet the needs of this new maze in order to carry their solar panels to the charging...

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Learning Goal(s):
Students will combine SPRK+ programming with the construction of a compatible chariot in order to guide their SPRK+ “Mars rover” to carry solar panels to a charging station.Students will present a final project to the class that summarizes their knowledge about the scientific background knowledge tied to this project as well as their design and testing process.
Author:
Deb Frankel
Estimated Activity Length:
8 hours
Kidwind Small Water Pump

Solar Powered Water Pumping

Grades:
2-5
Lesson Number:
6
Description:

Students use a solar module and other materials in conjunction with a water pump to test how quickly one cup of water can be pumped.

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BioLite

Biolite - Fire to Phone Charging

Grades:
7-12
Unit:
Lesson Number:
6
Description:

This is the 6 th part in the Off the Grid Unit. This lesson continues to look at the efficiency of USB charging devices, but this time we will be using a commercially available camping stove that uses heat to create electricity in order to charge a phone....

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More Details Less Details
Learning Goal(s):
1. Students will use thermometers and a stopwatch to calculate power. 2. Students will use collected data and be able to make power calculations from this data. 3. Students will also be able to calculate efficiency from their power calculations. 4. Students will be able to compare efficiencies to other circuits tested in this unit. 5. Students will know what the Peltier Junction does.
Author:
Brett McFarland
Relevant NGSS PE:
Estimated Activity Length:
1 hour