Creating a LightTracking Servo
Grades:
912
Learning Goal(s):
Students will synthesize the previous lesson for light metering and servo control to design a servo controlled by two photoresistors that will track a light source.
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Creating the Most Effective Solar Heater
Grades:
68
Learning Goal(s):
In this activity students demonstrate the ability to evaluate competing solutions to the problem of increasing the heat energy transferred to a vial of water.
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Daily Variations in Solar Energy
Grades:
35
Energy Content:
Learning Goal(s):
Students will understand that when the sun is lower in the sky, it casts a longer shadow on an object. When the sun is higher in the sky, it casts a smaller shadow. Students will also understand the importance of adjusting the position of a solar oven every half hour or so throughout the cooking process to insure that the bottom of the oven is facing the sun directly in order to maximize heat absorption.
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DC to AC to DC Efficiency
Grades:
712
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.
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Designing a Faster Water Pump
Grades:
25
Learning Goal(s):
Students will be able to use available tools to design and test a solar water pump, refine their design, test and finally evaluate their efforts. Through this process students will understand and gain experience with the engineering design process.
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Designing a Solar Charger
Grades:
1012
Learning Goal(s):
1. Students will explore the role of series and parallel wiring as they pertain to voltage and amperage. 2. Students will explore the processes involved with charging batteries and relate these processes to voltage and amperage. 3. Students will test photovoltaic modules to identify voltage and amperage outputs. 4. Students will design a system of wiring 3 V, 1.5 A modules together as a means to charge a 12 V leadacid battery 5. Students will predict and test the effectiveness of their designed solar charger.
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Designing a Solar Phone Charger
Grades:
712
Learning Goal(s):
1. Students will be able to design a device that can charge a phone with 4 hours of sun a day. 2. Students will use collected data and be able to support their design – i.e. the data will show that the unit will produce enough energy to charge a phone given it receives 4 hours of sun a day. 3. Students will also be able to calculate efficiency from their power calculations. 4. Students will be able to compare efficiencies of their circuit to others tested in this unit. 5. Students can calculate how much energy 4 hours of sunlight can produce on the solar modules they will use.
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Developing a Model of Thermal Energy, Atoms, and Molecules
Grades:
68
Learning Goal(s):
Students will develop a model through collaborative inquiry to explain thermal kinetic energy and predict the outcome when heat is added to a substance. Students will build argumentation from evidence skills through collaborative sensemaking and gallery walk presentations. Students will develop a model of atomic and molecular structures.
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Diving into the Physics of Motors and Generators
Grades:
912
Learning Goal(s):
1. Through handson 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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Dual Axis Light Tracking
Grades:
912
Learning Goal(s):
Students will create a solar tracker with two degrees of freedom.
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