Earth Sun

Understanding Light

Grades:
4-5
Lesson Number:
5
Description:

Students will observe and articulate their observations of the way that different materials reflect and absorb sunlight, transforming it into heat to varying degrees.

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Learning Goal(s):
Students will conduct simple experiments to learn what kind of materials absorb heat from the sun, what kind of materials reflect light from the sun and what color of materials do not get hot in the sun. This lesson gives students experience in beginning to learn about why certain materials and colors are used in solar ovens.
Pedagogy & Practice:
NGSS Science and Engineering Practices:
Author:
Lisa Morgan
Other Subjects Covered:
Estimated Activity Length:
30 min
Solar Mobile

Solar Mobile Design Challenge - Construction

Grades:
6-8
Lesson Number:
5
Description:

This is the culminating hands-on project for the Solar Mobile Design Challenge Lessons, with construction aligned to an engineering design process. Students start by Restating the Design Problem that was introduced to them in the beginning of the Unit....

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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. 
Author:
Kristy Schneider
Other Subjects Covered:
Estimated Activity Length:
6 hours
Hot Pack

Engineering a Hot Pack

Grades:
7-8
Lesson Number:
5
Description:

Through a series of inquiry activities, students will discover the properties of the chemical reaction of dissolving CaCl 2 in water, the effect of stirring, and of adding baking soda and sodium polyacrylate crystals. Once initial data is collected,...

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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. 
Author:
Melody Childers
Relevant NGSS PE:
Estimated Activity Length:
5 hours
Earth Sun

Heat Transfer

Grades:
3-5
Lesson Number:
7
Description:

Students will observe that heat naturally spreads from warmer places to cooler places and that some materials spread (conduct) heat and others keep it from spreading (insulate).

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More Details Less Details
Learning Goal(s):
Students will observe how some materials conduct heat and others insulate heat.
Pedagogy & Practice:
Author:
Lisa Morgan
Estimated Activity Length:
30 min

Cost Effective Solar Cells: Titanium Dioxide Solar Cell Construction and Testing

Grades:
9-12
Lesson Number:
7
Description:

This lesson is designed to be completed in two 80-minute sections. The teacher will show a basic procedure and video. The teacher will facilitate the construction of Organic Dye-Sensitized solar cells on coated glass plates with Titanium Dioxide. A fume...

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Learning Goal(s):
Students will construct titanium dioxide coated “raspberry juice” solar cellsStudents will test titanium dioxide coated “raspberry juice” solar cells under various conditions 
Author:
Tom Wolverton
Estimated Activity Length:
3 hours

Cost Effective Solar Cells: Solar Cell Manufacturing Field Trip and/or Guest Speaker

Grades:
9-12
Lesson Number:
9
Description:

This lesson is designed to be completed in two 80-minute sections. The teacher will facilitate a field trip to a nearby silicon manufacturing facility, solar panel manufacturing facility, or other semiconductor facility. These facilities often require...

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More Details Less Details
Learning Goal(s):
Students will visit a solar cell or silicon manufacturing facility and/or engage with guest speakers.Students will learn more detailed solar cell principles and manufacturing techniques involved in solar cell construction.
Author:
Tom Wolverton
Estimated Activity Length:
3 hours