Student groups use a "real" 3D coordinate system to plot points in …
Student groups use a "real" 3D coordinate system to plot points in space. Made from balsa wood or wooden dowels, the system has three axes at right angles and a plane (the XY plane) that can slide up and down the Z axis. Students are given several coordinates and asked to find these points in space. Then they find the coordinates of the eight corners of a box/cube with given dimensions.
The resource "Plane of charge" is included in the "Electrical engineering" course …
The resource "Plane of charge" is included in the "Electrical engineering" course from Khan Academy. This resource is one of the sub-topics in the "Electrostatics" topic area.
The resource "Planning and propulsion" is included in the "Electrical engineering" course …
The resource "Planning and propulsion" is included in the "Electrical engineering" course from Khan Academy. This resource is one of the sub-topics in the "Home-made robots" topic area.
This online article discusses supply and demand issues surrounding plastics recycling, specifically …
This online article discusses supply and demand issues surrounding plastics recycling, specifically plastic water bottles. The resource, "Plastic Bottles Pile Up As Mountains of Waste Article-Student Handout" included in "Lesson 5 Non-Municipal Water" is a part of "Unit 07 Water on a Global Scale" included in Energy & Sustainability ES - Course 4.
Students are introduced to the growing worldwide environmental problems that stem from …
Students are introduced to the growing worldwide environmental problems that stem from plastic waste. What they learn about microplastics and the typical components of the U.S. water treatment process prepares them to conduct three engaging associated activities. During the lesson, students become more aware of the pervasiveness and value of plastic as well as the downstream pollution and health dangers. They learn how plastic materials don’t go away, but become microplastic pollution that accumulates in water resources as well as human and other animal bodies. They examine their own plastic use, focusing on what they discard daily, and think about better ways to produce or package those items to eliminate or reduce their likelihood of ending up as microplastic pollution. A concluding writing assignment reveals their depth of comprehension. The lesson is enhanced by arranging for a local water treatment plant representative to visit the class for Qs and As. In three associated activities, students design/test microplastic particle filtering methods for commercial products, create mini wastewater treatment plant working models that remove waste and reclaim resources from simulated wastewater, and design experiments to identify the impact of microplastics on micro-invertebrates.
Student teams measure voltage and current in order to determine the power …
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.
The resource "Polling sensors" is included in the "Electrical engineering" course from …
The resource "Polling sensors" is included in the "Electrical engineering" course from Khan Academy. This resource is one of the sub-topics in the "Lego robotics" topic area.
The resource "Polling sensors" is included in the "Electrical engineering" course from …
The resource "Polling sensors" is included in the "Electrical engineering" course from Khan Academy. This resource is one of the sub-topics in the "Lego robotics" topic area.
Using Avida-ED freeware, students control a few factors in an environment populated …
Using Avida-ED freeware, students control a few factors in an environment populated with digital organisms, and then compare how changing these factors affects population growth. They experiment by altering the environment size (similar to what is called carrying capacity, the maximum population size that an environment can normally sustain), the initial organism gestation rate, and the availability of resources. How systems function often depends on many different factors. By altering these factors one at a time, and observing the results, students are able to clearly see the effect of each one.
This lesson is the second of two that explore cellular respiration and …
This lesson is the second of two that explore cellular respiration and population growth in yeasts. In the first lesson, students set up a simple way to indirectly observe and quantify the amount of respiration occurring in yeast-molasses cultures. Based on questions that arose during the first lesson and its associated activity, in this lesson students work in small groups to design experiments that will determine how environmental factors affect yeast population growth.
Waterwheels are devices that generate power and do work. Student teams construct …
Waterwheels are devices that generate power and do work. Student teams construct waterwheels using two-liter plastic bottles, dowel rods and index cards, and calculate the power created and work done by them.
Students learn how engineers design devices that use water to generate electricity …
Students learn how engineers design devices that use water to generate electricity by building model water turbines and measuring the resulting current produced in a motor. Student teams work through the engineering design process to build the turbines, analyze the performance of their turbines and make calculations to determine the most suitable locations to build dams.
Students learn how engineers harness the energy of the wind to produce …
Students learn how engineers harness the energy of the wind to produce power by following the engineering design process as they prototype two types of wind turbines and test to see which works best. Students also learn how engineers decide where to place wind turbines, and the advantages and disadvantages to using wind power compared to other non-renewable energy sources.
The resource "Power connector for the Arduino" is included in the "Electrical …
The resource "Power connector for the Arduino" is included in the "Electrical engineering" course from Khan Academy. This resource is one of the sub-topics in the "Home-made robots" topic area.
Students imagine they are stranded on an island and must create the …
Students imagine they are stranded on an island and must create the brightest light possible with the meager supplies they have on hand in order to gain the attention of a rescue airplane. In small groups, students create circuits using items in their "survival kits" to create maximum voltage, measured with a multimeter and two LED lights. To complete the activity, students act as engineers by using the given materials to create circuits that produces the highest voltage and light up the most LED lights. They apply their knowledge of how voltage differs in a series circuit and a parallel circuit to design their solutions.
The resource "Power wires and on/off switch" is included in the "Electrical …
The resource "Power wires and on/off switch" is included in the "Electrical engineering" course from Khan Academy. This resource is one of the sub-topics in the "Home-made robots" topic area.
The resource "Practice: Series and parallel resistors" is included in the "Electrical …
The resource "Practice: Series and parallel resistors" is included in the "Electrical engineering" course from Khan Academy. This resource is one of the sub-topics in the "Circuit analysis" topic area.
Students use balloons (a polymer) to explore preconditioning a viscoelastic material behavior …
Students use balloons (a polymer) to explore preconditioning a viscoelastic material behavior that is important to understand when designing biomedical devices. They improve their understanding of preconditioning by measuring the force needed to stretch a balloon to the same displacement multiple times. Students gain experience in data collection and graph interpretation.
This Smithsonian webpage contains links and documents necessary for the "Prehistoric Climate …
This Smithsonian webpage contains links and documents necessary for the "Prehistoric Climate Change and Why it Matters Today" set of activities. The resource, "Prehistoric Climate Change and Why it Matters Today" included in "Lesson 4 Energy Budget and Climate" is a part of "Unit 06 Energy Budget, Climate and Energy Resources" included in Energy & Sustainability ES - Course 2.
The resource "Preparing to study electrical engineering on Khan Academy" is included …
The resource "Preparing to study electrical engineering on Khan Academy" is included in the "Electrical engineering" course from Khan Academy. This resource is one of the sub-topics in the "Introduction to electrical engineering" topic area.
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