the Institute of Electrical and Electronics Engineers
the International Business Machines
This is a inquiry-based lab for Grades 9-12 that explores how solar energy is gathered and transferred to electrical energy in solar panels. Students work in teams to disassemble a calculator, evaluate the design and operation of its component parts, and recommend changes to improve functionality through redesign. The lesson specifically focuses on photovoltaic technology and how it works in a solar cell. In the introductory physics classroom, the lesson could help students understand that semiconductor physics is the basis for most solar cells currently in production.
The lesson follows a module format that includes objectives and learner outcomes, problem sets, student guides, recommended reading, illustrated procedures, worksheets, and background information about the engineering connections. This collection is part of TryEngineering.org, maintained by the Institute of Electrical and Electronics Engineers (IEEE).
9-12: 3A/H4. Engineers use knowledge of science and technology, together with strategies of design, to solve practical problems. Scientific knowledge provides a means of estimating what the behavior of things will be even before they are made. Moreover, science often suggests new kinds of behavior that had not even been imagined before, and so leads to new technologies.
3B. Design and Systems
9-12: 3B/H3. Complex systems have layers of controls. Some controls operate particular parts of the system and some control other controls. Even fully automatic systems require human control at some point.
4. The Physical Setting
4B. The Earth
9-12: 4B/H8. The earth has many natural resources of great importance to human life. Some are readily renewable, some are renewable only at great cost, and some are not renewable at all.
4E. Energy Transformations
6-8: 4E/M3. Thermal energy is transferred through a material by the collisions of atoms within the material. Over time, the thermal energy tends to spread out through a material and from one material to another if they are in contact. Thermal energy can also be transferred by means of currents in air, water, or other fluids. In addition, some thermal energy in all materials is transformed into light energy and radiated into the environment by electromagnetic waves; that light energy can be transformed back into thermal energy when the electromagnetic waves strike another material. As a result, a material tends to cool down unless some other form of energy is converted to thermal energy in the material.
6-8: 4E/M6. Light and other electromagnetic waves can warm objects. How much an object's temperature increases depends on how intense the light striking its surface is, how long the light shines on the object, and how much of the light is absorbed.
8. The Designed World
8C. Energy Sources and Use
6-8: 8C/M5. Energy from the sun (and the wind and water energy derived from it) is available indefinitely. Because the transfer of energy from these resources is weak and variable, systems are needed to collect and concentrate the energy.
12. Habits of Mind
12C. Manipulation and Observation
6-8: 12C/M5. Analyze simple mechanical devices and describe what the various parts are for; estimate what the effect of making a change in one part of a device would have on the device as a whole.
12D. Communication Skills
6-8: 12D/M6. Present a brief scientific explanation orally or in writing that includes a claim and the evidence and reasoning that supports the claim.
<a href="http://www.compadre.org/psrc/items/detail.cfm?ID=12301">International Business Machines. TryEngineering: Here Comes the Sun. Institute of Electrical and Electronics Engineers, April 6, 2011.</a>
International Business Machines. TryEngineering: Here Comes the Sun. Institute of Electrical and Electronics Engineers, April 6, 2011. http://www.tryengineering.org/lesson_detail.php?lesson=16 (accessed 18 May 2013).
TryEngineering: Here Comes the Sun. Institute of Electrical and Electronics Engineers, 2006. 6 Apr. 2011. International Business Machines. 18 May 2013 <http://www.tryengineering.org/lesson_detail.php?lesson=16>.
%0 Electronic Source %D April 6, 2011 %T TryEngineering: Here Comes the Sun %I Institute of Electrical and Electronics Engineers %V 2013 %N 18 May 2013 %8 April 6, 2011 %9 application/pdf %U http://www.tryengineering.org/lesson_detail.php?lesson=16
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