## A Simple Circuit (Lesson 4)

Students will be able to draw a simple circuit, label its parts, and show the direction/path that current is flowing.

Students make a hypothesis about how a set of materials should be connected in order to make a motor spin. Through guided trial and error students are led to the idea of a circuit as the proper way to connect the materials in order to make the fan turn. View full description >>

## Activities and Assessment of Vocab and Units (Lesson 2)

- Students will be able to define voltage, current, power and energy as it relates to electricity.
- Students will be able to define electricity and have the units for all the above terms in their Journals.
- Students will be able to set up multimeters for voltage and current and will be assessed on this.

This lesson is intended as a way to check for student understanding regarding the content presented in the previous lesson of this unit. The assessment takes place in two parts: a written assessment of

## Analyze Data and Develop Conclusions (Lesson 9)

Students will analyze data from the solar boat races and develop conclusions. Students will write out their conclusions in a clear, articulate manner that demonstrates the usage of evidence from their own observations. Students will determine specific uses for quantitative vs. qualitative data in science experiments.

Students have performed the investigation. They will now analyze their data, refer to their initial predictions, and develop their conclusions. Students will have the opportunity to discuss the usefulness of

## Analyze Data and Draw Conclusions (Lesson 5)

Students will determine how differences between solar cars affected their functionality. Students will make claims based off of quantitative and qualitative data. Students will engage in scientific talk based off of their own observations when constructing and testing solar cars. Students will complete a journaling activity that outlines their processes relating to making conclusions.

Students have performed the investigation and will now analyze their data. They will accomplish this through a journaling activity that requires them to use the data collected from the actual races. The will

## Background Research on Alternative Transportation Vehicles (Lesson 2)

1. Students will define BEVs, HEVs, HFCVs, and HICEVs

2. Students will compare the above vehicles and relate the pros and cons of each technology

3. Students will begin to evaluate which type of technology might be best suited for the goal of

replacing fossil fuels in the transportation sector

4. Students will begin to brainstorm ideas for how solar energy might be used to enhance

these technologies

Students completing this lesson will already have identified some of the problems inherent in the development of ideas to replace fossil fuels in the transportation sector. Students will now conduct some

## Biolite - Fire to Phone Charging (Lesson 6)

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.

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. This is the Biolite stove that exploits the Peltier Junction in order to... View full description >>

## Bioreactor Water Circulation System (Lesson 3)

1. Students will examine the properties of solar water pumping systems using KidWind solar water pumps or similar water pumps.

2. Students will experiment with the properties of water and its limitations in circulating due to pump power and distance.

3. Students will evaluate the use of a heat sink/chiller in the circulation of water through the bioreactor.

Solar energy is available when the sun shines but energy can be supplemented at night by the decomposition energy in a bioreactor. In this activity we will experiment with the feasibility of using heated water in a bioreactor to circulate it through a water trough or pipe system to prevent it from freezing in the winter. This method will save... View full description >>

## Build Solar Cars (Lesson 3)

Students will construct a geared solar car, a pulley-system solar car, or both. Students will make verbal predictions about the outcomes and viabilities of different types of solar cars. Students will pinpoint the independent, dependent, and control variables in their solar car testing process.

Students will build their solar vehicles. There are many options for them to do this, depending on the specific variables hoping to be tested following the construction and material-selection process.

## Building Solar Boats (Lesson 7)

Students will follow step-by-step instructions to build their solar boats. They will troubleshoot as necessary by making sure electricity flows into the motor to make the vehicles move by propeller or gears. Students will determine different data points that are useful in the determining the most effective design for a solar powered boat. Students will undergo the process of redesign, noting why they made changes to particular variables on their boat and noting how these changes played out.

Students will follow step-by-step instructions to build their solar boats. They will troubleshoot as necessary by making sure electricity flows into the motor to make the vehicles move by propeller or gears.

## Can Portable PV Charge Vehicles? (Lesson 3)

- Students will explore the role of series and parallel wiring as they pertain to voltage and amperage.
- Students will explore the processes involved with charging batteries and relate these processes to voltage and amperage.
- Students will test photovoltaic modules to identify voltage and amperage outputs.
- Students will calculate, using data from field tests, the maximum power that can be produced using photovoltaics within the constraints of a typical passenger vehicle’s surface area.
- Students will calculate charging times using various PV array power ratings.

In this lesson, students will begin to explore the potential and challenges related to using photovoltaics to supplement the power needed to charge batteries in BEVs. Students will test a variety of wiring options related to series and parallel wiring. Once students have grasped the basics, they will measure the surface area of a passenger... View full description >>