Students conduct their own research to discover and understand the methods designed …
Students conduct their own research to discover and understand the methods designed by engineers and used by scientists to analyze or validate the molecular structure of DNA, proteins and enzymes, as well as basic information about gel electrophoresis and DNA identification. In this computer-based activity, students investigate particular molecular imaging technologies, such as x-ray, atomic force microscopy, transmission electron microscopy, and create short PowerPoint presentations that address key points. The presentations include their own explanations of the difference between molecular imaging and gel electrophoresis.
Students test the insulation properties of different materials by timing how long …
Students test the insulation properties of different materials by timing how long it takes ice cubes to melt in the presence of various insulating materials. Students learn about the role that thermal insulation materials can play in reducing heat transfer by conduction, convection and radiation, as well as the design and implementation of insulating materials in construction and engineering.
Definite integral of the product of cosines. The integral of cos(mt) * …
Definite integral of the product of cosines. The integral of cos(mt) * cos(nt) = 0, except for the special case when m = n. When m = n, the integral evaluates to pi. Created by Sal Khan.
Definite integral of product of sines. The integral of sin(mt) * sin(nt) …
Definite integral of product of sines. The integral of sin(mt) * sin(nt) = 0, except for the special case when m = n. When m = n, the integral evaluates to pi. Created by Sal Khan.
Definite integral of the product of sine and cosine. Integrating sin(mt) * …
Definite integral of the product of sine and cosine. Integrating sin(mt) * cos(nt) over a full period equals zero for any integer m and n. Created by Sal Khan.
Students are introduced to the concept of an environment and the interactions …
Students are introduced to the concept of an environment and the interactions within it through written and hands-on webbing activities. They also learn about environmental engineering careers and the roles of these engineers in our society.
Interview an Organism gives students the opportunity to enter the world of …
Interview an Organism gives students the opportunity to enter the world of an organism. Students slow down and have a “conversation” with an organism of their choosing, asking questions that can be answered through more observation while paying attention to its surroundings and the scale of its world. It helps take students to a “next level” of observing and questioning as they learn to ask themselves questions that lead them to make deeper observations. In the process, they get to know their chosen organism.
In this Exploration Routine, students search for interesting organisms and observe them. Each pair of students chooses an organism to study, comes up with questions about the organism’s appearance and structures, while attempting to answer each one through observations. Then they move on to more probing questions about the organism’s behavior, ecosystem, and relationships to other organisms. Afterwards, students share with other pairs and then with the whole group.
After watching a 1940 film clip of the "Galloping Gertie" bridge collapse …
After watching a 1940 film clip of the "Galloping Gertie" bridge collapse and a teacher demo with a simple pendulum, student groups discuss and then research the idea of motion that repeats itself specifically the concepts of periodic and harmonic motion. They become aware of where and how these types of motion occur and affect them in everyday applications, both natural (seasons, tides, waves) and engineered (swings, clocks, mechanical systems). They learn the basic properties of this type of motion (period, amplitude, frequency) and how the rearrangement of the simple pendulum equation can be used to solve for gravitational acceleration, pendulum length and gravity. At lesson end, students are ready to conduct the associated activity during which they conduct experiments that utilize swinging Android® devices as pendulums.
Acting as if they are biomedical engineers, students design and print 3D …
Acting as if they are biomedical engineers, students design and print 3D prototypes of pressure sensors that measure the pressure of the eyes of people diagnosed with glaucoma. After completing the tasks within the associated lesson, students conduct research on pressure gauges, apply their understanding of radio-frequency identification (RFID) technology and its components, iterate their designs to make improvements, and use 3D software to design and print 3D prototypes. After successful 3D printing, teams present their models to their peers. If a 3D printer is not available, use alternate fabrication materials such as modeling clay, or end the activity once the designs are complete.
Microcontrollers are the brains of the electronic world, but in order to …
Microcontrollers are the brains of the electronic world, but in order to play with one, you must first get it connected! For this maker challenge, students learn how to connect their Arduino microcontroller circuit boards to computers. First, students are walked through the connection process, helped to troubleshoot common pitfalls, and write their first Arduino programs (setup and loop functions, semicolons, camel case, pin 13 LED). Then they are given the open-ended challenge to create their own blinking LED code—such as writing Morse code messages and mimicking the rhythm of a heartbeat. This practice helps students become comfortable with the fundamental commands before progressing to more difficult programs.
Students explore the basics of DC circuits, analyzing the light from light …
Students explore the basics of DC circuits, analyzing the light from light bulbs when connected in series and parallel circuits. Ohm's law and the equation for power dissipated by a circuit are the two primary equations used to explore circuits connected in series and parallel. Students measure and see the effect of power dissipation from the light bulbs. Kirchhoff's voltage law is used to show how two resistor elements add in series, while Kirchhoff's current law is used to explain how two resistor elements add when in parallel. Students also learn how electrical engineers apply this knowledge to solve problems. Power dissipation is particularly important with the introduction of LED bulbs and claims of energy efficiency, and understanding how power dissipation is calculated helps when evaluating these types of claims. This activity is designed to introduce students to the concepts needed to understand how circuits can be reduced algebraically.
This course is an introductory subject in the field of electric power …
This course is an introductory subject in the field of electric power systems and electrical to mechanical energy conversion. Electric power has become increasingly important as a way of transmitting and transforming energy in industrial, military and transportation uses. Electric power systems are also at the heart of alternative energy systems, including wind and solar electric, geothermal and small scale hydroelectric generation.
Through an overview of some of the environmental challenges facing the growing …
Through an overview of some of the environmental challenges facing the growing and evolving country of China today, students learn about the effects of indoor and outdoor air pollution that China is struggling to curb with the help of engineers and scientists. This includes the sources of particulate matter 2.5 and carbon dioxide, and air pollution impacts on the health of people and the environment.
Students are presented with examples of the types of problems that environmental …
Students are presented with examples of the types of problems that environmental engineers solve, specifically focusing on air and land quality issues. Air quality topics include air pollution sources, results of poor air quality including global warming, acid rain and air pollution, as well as ways to reduce air pollution. Land quality topics include the differences between renewable and non-renewable resources, the results of non-renewable resource misuse and ways to reduce land pollution. (Water quality is introduced in a later lesson in a separate presentation, as it is the focal point of this unit curriculum.)
Students are introduced to the concepts of evolution by natural selection and …
Students are introduced to the concepts of evolution by natural selection and digital evolution software. They learn about the field of evolutionary computation, which applies the principles of natural selection to solve engineering design problems. They learn the similarities and differences between natural selection and the engineering design process.
Students learn how engineers apply their understanding of DNA to manipulate specific …
Students learn how engineers apply their understanding of DNA to manipulate specific genes to produce desired traits, and how engineers have used this practice to address current problems facing humanity. They learn what genetic engineering means and examples of its applications, as well as moral and ethical problems related to its implementation. Students fill out a flow chart to list the methods to modify genes to create GMOs and example applications of bacteria, plant and animal GMOs.
Students are introduced to the concept of simple tools and how they …
Students are introduced to the concept of simple tools and how they can make difficult or impossible tasks easier. They begin by investigating the properties of inclined planes and how implementing them can reduce the force necessary to lift objects off the ground.
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