OER Commons - Keywords: Efficiency
https://www.oercommons.org
daily12000-01-01T12:00+00:00The Boxes Go Mobile
https://www.oercommons.org/courses/the-boxes-go-mobile-3
Learners display their findings after a study of surface area and volume. They build a mobile to show a commercially available box and a constructed cubical box of the same volume. Learners also display the pieces left over from the original box showing that the cubical box has less surface area. This activity requires learners to have previous knowledge of calculating surface area and volume. Activity time can be divided over multiple meetings.Mary R. HebrankPratt School of Engineering, Duke UniversityEngineeringTechnologyManufacturingEducationMathematicsGeometryPhysics2015-05-14T16:13:19.681033Course Related MaterialsNew Boxes from Old
https://www.oercommons.org/courses/new-boxes-from-old-3
Learners determine the surface area and volume of two identical boxes, and then figure out the dimensions of a cubical box with the same volume. Then they construct a new, cube-shaped box from one of the original boxes, discovering the new box has less surface area than the original box. This activity requires learners to have previous knowledge of calculating surface area and volume. Activity time can be divided over multiple meetings.Mary R. HebrankPratt School of Engineering, Duke UniversityEngineeringTechnologyManufacturingEducationMathematicsGeometryPhysics2015-05-14T16:13:19.234426Course Related MaterialsDivide and Conquer
https://www.oercommons.org/courses/divide-and-conquer-2
Learners work in groups to build model cars from paper parts. First, each learner builds cars individually and the group times themselves. Then, the group forms an assembly line with each learner assembling only a piece of the paper cars, and time themselves again. Debriefing questions allow learners to discuss the advantages and disadvantages of assembly line construction. When learners set up a free account at Kinetic City, they can answer bonus questions at the end of the activity as a quick assessment. As a larger assessment, learners can complete the Bug Blaster game after they've completed several activities.American Association for the Advancement of ScienceNational Science FoundationEngineeringTechnologyManufacturingEducationHistory, Law, Politics2015-05-14T16:12:59.166860Course Related MaterialsManufacturing Technologies: Making a Picture Frame
https://www.oercommons.org/courses/manufacturing-technologies-making-a-picture-frame-3
Learners examine the manufacturing process while they make picture frames from cereal boxes. Although this is a simple project, it gives learners the opportunity to think about and discuss the more complex engineering topics of: mass production, quality control, production efficiency, safety, product design, and distribution. Resource contains vocabulary definitions and suggestions for assessment, extensions, and scaling for different levels of learners.Ersa UnluaslanPratt & WhitneyWorcester Polytechnic InstituteEngineeringTechnologyManufacturingEducationMathematicsGeometry2015-05-14T16:12:40.552181Course Related MaterialsSolar Water Heater
https://www.oercommons.org/courses/solar-water-heater-4
Learners work in teams to design and build solar water heating devices that mimic those used in residences to capture energy in the form of solar radiation and convert it to thermal energy. This thermal energy is next transferred to water (to be used as domestic hot water) in the form of heat. In doing this, learners gain a better understanding of the three different types of heat transfer, each of which plays a role in the solar water heater design. Once the model devices are constructed, learners perform efficiency calculations and compare designs. Note: part of this activity must be conducted outdoors on a sunny day (it is okay if it's cold, but it must be sunny).Integrated Teaching and Learning Program, College of Engineering, University of Colorado at BoulderUniversity of Colorado at BoulderEngineeringEnvironmental ScienceTechnologyEducationHistory, Law, PoliticsLife ScienceEcologyForestry and AgricultureMathematicsAlgebraAtmospheric ScienceChemistryGeoscienceOceanographyPhysicsSpace ScienceAnthropologySocial Sciences2015-05-07T14:18:06.598657Course Related MaterialsAll Things Green
https://www.oercommons.org/courses/all-things-green
This presentation by Bob Feldmaier of the Center for Advanced Automotive Technology (CAAT) was presented at the 2013 All Things Green conference and discusses the topics of green fleets, plug-in electric vehicles (PEVs), and PEV charging infrastructure. Provided in the presentation is a basic overview of PEVs and the types of PEVs, factors that affect PEV efficiency and range, the benefits of driving PEVs, the types and costs of installation of PEV charging infrastructure, and information on the federal Green Fleets program. This conference is annual and is hosted by the Macomb County Chamber. Other presenters at this conference came from Clean Light Green Light, Consumers Energy, General Motors, New Haven Schools, NextEnergy, Waste Management, and more.Center for Advanced Automotive Technology (CAAT)EngineeringEnvironmental ScienceTechnologyAutomotive Technology and RepairEducationEcologyForestry and AgricultureGeoscienceSocial Sciences2015-03-17T13:07:01.252634Course Related MaterialsMaximum Power Point
https://www.oercommons.org/courses/maximum-power-point-2
Students learn how to find the maximum power point (MPP) of a photovoltaic (PV) panel in order to optimize its efficiency at creating solar power. They also learn about real-world applications and technologies that use this technique, as well as Ohm's law and the power equation, which govern a PV panel's ability to produce power.Integrated Teaching and Learning Program,Jack Baum, Stephen Johnson, William Surles, Abby Watrous, Malinda Schaefer Zarske (This high school curriculum was originally created as a class project by engineering students in a Building Systems Program course at CU-Boulder.)TeachEngineering.orgEngineeringTechnologyEcologyForestry and AgricultureGeosciencePhysicsSpace Science2015-03-11T17:09:31.629238Course Related MaterialsEnergy Systems and Solutions
https://www.oercommons.org/courses/energy-systems-and-solutions-2
The Energy Systems and Solutions unit brings students through the exploration of science and engineering concepts as they relate to energy issues in everyday life. Issues surrounding energy production and energy consumption provide a relevant theme for learning basic science, math and engineering concepts, and also provide a convenient platform for introducing current scientific and technological developments into the curriculum. Energy-related issues touch the lives of every student. This project-based curriculum follows an engineering problem solving approach; students simultaneously learn and use scientific and mathematical content and processes as they solve an energy-related problem that is meaningful to them. By challenging them with a problem to solve, students are engaged in scientific and engineering processes, thereby reinforcing subject matter retention and targeting a wide range of learning styles in the classroom. The unit is organized into three main sections. The first section includes various activities designed to help students understand the problem at hand—namely, the issues surrounding our society's energy situation—so that they can realize the importance of what they are studying and the significance of their proposed solutions. An understanding of the problem forms the basis for the student learning that takes place in the second section, which includes basic energy concepts (forms, states, conversions, efficiency, etc.), content required by state and federal science educational standards. Students learn these concepts by participating engaging activities designed to show the relevance of the science material to the real world as well as to the solution of their assigned problem. Finally, in the last section of the unit, students apply the concepts they learned to complete a culminating project that requires them to consider what actions they can take to reduce our dependence of fossil fuels or otherwise provide a positive solution for our current energy crisis.Office of Educational Partnerships,Susan Powers, Jan DeWatersTeachEngineering.orgEngineeringTechnologyEcologyForestry and AgricultureGeosciencePhysics2015-03-11T17:09:22.809992Course Related MaterialsConcentrating on the Sun with PVs
https://www.oercommons.org/courses/concentrating-on-the-sun-with-pvs
Students design, build and test reflectors to measure the effect of solar reflectance on the efficiency of solar PV panels. They use a small PV panel, a multimeter, cardboard and foil to build and test their reflectors in preparation for a class competition. Then they graph and discuss their results with the class. Complete this activity as part of the Photovoltaic Efficiency unit and in conjunction with the Concentrated Solar Power lesson.Integrated Teaching and Learning Program,TeachEngineering.orgWilliam Surles, Abigail Watrous, Malinda Schaefer Zarske, Jack Baum, Stephen Johnson (This high school curriculum was originally created as a class project by engineering students in a Building Systems Program course at CU-Boulder.)EngineeringTechnologyEducationEcologyForestry and AgricultureMathematicsGeosciencePhysicsSpace Science2015-03-11T17:09:13.388034Course Related MaterialsConcentrated Solar Power
https://www.oercommons.org/courses/concentrated-solar-power
Students learn how the total solar irradiance hitting a photovoltaic (PV) panel can be increased through the use of a concentrating device, such as a reflector or lens. This is the final lesson in the Photovoltaic Efficiency unit and is intended to accompany a fun design project (see the associated Concentrating on the Sun with PVs activity) to wrap up the unit. However, it can be completed independently of the other unit lessons and activities.Integrated Teaching and Learning Program,TeachEngineering.orgWilliam Surles, Abigail Watrous, Jack Baum, Stephen Johnson (This high school curriculum was originally created as a class project by engineering students in a Building Systems Program course at CU-Boulder.)EngineeringTechnologyEcologyForestry and AgricultureMathematicsGeosciencePhysicsSpace Science2015-03-11T17:09:08.504091Course Related MaterialsPointing at Maximum Power for PV
https://www.oercommons.org/courses/pointing-at-maximum-power-for-pv
Student teams measure voltage and current in order to determine the power output of a photovoltaic (PV) panel. They vary the resistance in a simple circuit connected to the panel to demonstrate the effects on voltage, current, and power output. After collecting data, they calculate power for each resistance setting, creating a graph of current vs. voltage, and indentifying the maximum power point.Integrated Teaching and Learning Program,Stephen Johnson, William Surles, Jack Baum, Abby Watrous, Eszter Horanyi, Malinda Schaefer Zarske (This high school curriculum was originally created as a class project by engineering students in a Building Systems Program course at CU-Boulder.)TeachEngineering.orgEngineeringTechnologyEcologyForestry and AgricultureGeosciencePhysicsSpace Science2015-03-11T17:09:05.052330Course Related MaterialsSolar Power
https://www.oercommons.org/courses/solar-power-5
Students learn about solar energy and how to calculate the amount of solar energy available at a given location and time of day on Earth. The importance of determining incoming solar energy for solar devices is discussed.Integrated Teaching and Learning Program,Marissa H. ForbesOdessa GomezTeachEngineering.orgEngineeringTechnologyEcologyForestry and AgricultureGeosciencePhysicsSpace Science2015-03-11T17:09:01.616477Course Related MaterialsLight vs. Heat Bulbs
https://www.oercommons.org/courses/light-vs-heat-bulbs-2
Students measure the light output and temperature (as a measure of heat output) for three types of light bulbs to identify why some light bulbs are more efficient (more light with less energy) than others.Jan DeWaters, Susan Powers, and a number of Clarkson and St. Lawrence University students in the K-12 Project Based Learning Partnership ProgramOffice of Educational Partnerships,TeachEngineering.orgEngineeringPhysics2015-03-11T17:08:59.776134Course Related MaterialsSolar Angles and Tracking Systems
https://www.oercommons.org/courses/solar-angles-and-tracking-systems
Students learn about the daily and annual cycles of solar angles used in power calculations to maximize photovoltaic power generation. They gain an overview of solar tracking systems that improve PV panel efficiency by following the sun through the sky.Integrated Teaching and Learning Program,TeachEngineering.orgWilliam Surles, Abby Watrous, Eszter Horanyi, Malinda Schaefer Zarske (This high school curriculum was originally created as a class project by engineering students in a Building Systems Program course at CU-Boulder.)EngineeringTechnologyEcologyForestry and AgricultureMathematicsTrigonometryGeosciencePhysicsSpace Science2015-03-11T17:08:53.876568Course Related MaterialsPump It!
https://www.oercommons.org/courses/pump-it
Pumps are used to get drinking water to our houses every day! And in disaster situations, pumps are essential to keep flood water out. In this hands-on activity, student groups design, build, test and improve devices to pump water as if they were engineers helping a rural village meet their drinking water supply. Students keep track of their materials costs, and calculate power and cost efficiencies of the prototype pumps. They also learn about different types of pumps, how they work and useful applications.Integrated Teaching and Learning Program,Michael A. Soltys, Malinda Schaefer ZarskeTeachEngineering.orgEngineeringGeoscience2015-03-11T17:08:52.749477Course Related MaterialsA New Angle on PV Efficiency
https://www.oercommons.org/courses/a-new-angle-on-pv-efficiency
Students examine how the orientation of a photovoltaic (PV) panel relative to the sun affects the efficiency of the panel. Using sunshine (or a lamp) and a small PV panel connected to a digital multimeter, students vary the angle of the solar panel, record the resulting current output on a worksheet, and plot their experimental results.Integrated Teaching and Learning Program,TeachEngineering.orgWilliam Surles, Jack Baum, Stephen Johnson, Abby Watrous, Eszter Horanyi, Malinda Schaefer Zarske (This high school curriculum was originally created as a class project by engineering students in a Building Systems Program course at CU-Boulder.)EngineeringTechnologyEcologyForestry and AgricultureMathematicsGeosciencePhysicsSpace Science2015-03-11T17:08:46.594701Course Related MaterialsPassive Solar Design
https://www.oercommons.org/courses/passive-solar-design
Students are introduced to passive solar design for buildings — an approach that uses the sun's energy and the surrounding climate to provide natural heating and cooling. They learn about some of the disadvantages of conventional heating and cooling and how engineers incorporate passive solar designs into our buildings for improved efficiency.Denise W. CarlsonIntegrated Teaching and Learning Program,Jonathan MacNeilMalinda Schaefer ZarskeTeachEngineering.orgEngineeringTechnologyEcologyForestry and AgricultureGeosciencePhysicsSpace ScienceSocial Sciences2015-03-11T17:08:45.106684Course Related MaterialsPhotovoltaic Efficiency
https://www.oercommons.org/courses/photovoltaic-efficiency
Through a series of four lessons, students are introduced to many factors that affect the power output of photovoltaic (PV) solar panels. Factors such as the angle of the sun, panel temperature, specific circuit characteristics, and reflected radiation determine the efficiency of solar panels. These four lessons are paired with hands-on activities in which students design, build and test small photovoltaic systems. Students collect their own data, and examine different variables to determine their effects on the efficiency of PV panels to generate electrical power.Integrated Teaching and Learning Program,TeachEngineering.orgWilliam Surles, Abby Watrous, Jack Baum, Stephen Johnson, Eszter Horyani, Dr. Gregor Henze, Malinda Schaefer Zarske, Denise W. CarlsonEngineeringTechnologyEcologyForestry and AgricultureGeosciencePhysicsSpace Science2015-03-11T17:08:38.945449Course Related MaterialsSolar Water: Heat it Up!
https://www.oercommons.org/courses/solar-water-heat-it-up
Students explore energy efficiency, focusing on renewable energy, by designing and building flat-plate solar water heaters. They apply their understanding of the three forms of heat transfer (conduction, convection and radiation), as well as how they relate to energy efficiency. They calculate the efficiency of the solar water heaters during initial and final tests and compare the efficiencies to those of models currently sold on the market (requiring some additional investigation by students). After comparing efficiencies, students explain how they would further improve their devices. Students learn about the trade-offs between efficiency and cost by calculating the total cost of their devices and evaluating cost per percent efficiency and per degree change of the water.Amanda GiulianiDarcie ChinnisIntegrated Teaching and Learning Program,Marissa H. ForbesOdessa GomezTeachEngineering.orgEngineeringTechnologyEcologyForestry and AgricultureGeosciencePhysicsSpace Science2015-03-11T17:08:35.185447Course Related MaterialsSolving Energy Problems
https://www.oercommons.org/courses/solving-energy-problems-2
The culminating energy project is introduced and the technical problem solving process is applied to get students started on the project. By the end of the class, students should have a good perspective on what they have already learned and what they still need to learn to complete the project.Office of Educational Partnerships,Susan Powers, Jan DeWaters, and a number of Clarkson and St. Lawrence students in the K-12 Project Based Learning Partnership ProgramTeachEngineering.orgEngineeringTechnologyEducationEcologyForestry and AgricultureGeosciencePhysics2015-03-11T16:52:48.722615Course Related Materials