Students are introduced to the fundamentals of environmental engineering as well as …
Students are introduced to the fundamentals of environmental engineering as well as the global air, land and water quality concerns facing today's environmental engineers. After a lesson and activity to introduce environmental engineering, students learn more about water chemistry aspects of environmental engineering. Specifically, they focus on groundwater contamination and remediation, including sources of contamination, adverse health effects of contaminated drinking water, and current and new remediation techniques. Several lab activities provide hands-on experiences with topics relevant to environmental engineering concerns and technologies, including removal efficiencies of activated carbon in water filtration, measuring pH, chromatography as a physical separation method, density and miscibility.
Students learn that buoyancy is responsible for making boats, hot air balloons …
Students learn that buoyancy is responsible for making boats, hot air balloons and weather balloons float. They calculate whether or not a boat or balloon will float, and calculate the volume needed to make a balloon or boat of a certain mass float. Conduct the first day of the associated activity before conducting this lesson.
The resource "Euler's cosine wave" is included in the "Electrical engineering" course …
The resource "Euler's cosine wave" is included in the "Electrical engineering" course from Khan Academy. This resource is one of the sub-topics in the "Circuit analysis" topic area.
The resource "Euler's formula" is included in the "Electrical engineering" course from …
The resource "Euler's formula" is included in the "Electrical engineering" course from Khan Academy. This resource is one of the sub-topics in the "Circuit analysis" topic area.
The resource "Euler's sine wave" is included in the "Electrical engineering" course …
The resource "Euler's sine wave" 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 explore material properties in hands-on and visually evident ways via the …
Students explore material properties in hands-on and visually evident ways via the Archimedes' principle. First, they design and conduct an experiment to calculate densities of various materials and present their findings to the class. Using this information, they identify an unknown material based on its density. Then, groups explore buoyant forces. They measure displacement needed for various materials to float on water and construct the equation for buoyancy. Using this equation, they calculate the numerical solution for a boat hull using given design parameters.
Students explore the chemical identities of polymeric materials frequently used in their …
Students explore the chemical identities of polymeric materials frequently used in their everyday lives. They learn how chemical composition affects the physical properties of the materials that they encounter and use frequently, as well as how cross-linking affects the properties of polymeric materials.
This article from AIR Worldwide is a brief history of the development …
This article from AIR Worldwide is a brief history of the development of building codes in the United States and an explanation of their importance in estimating building stock vulnerabilities.The resource, "The Evolution of Building Codes in the United States with Respect to Hurricane Winds" included in "Lesson 01 Building Codes" is a part of "Unit 05 Green Sustainable Facility Design" included in Energy & Sustainability ES - Course 3.
Students are introduced to the concepts of digital organisms and digital evolution. …
Students are introduced to the concepts of digital organisms and digital evolution. They learn about the research that digital evolution software makes possible, and compare and contrast it with biological evolution.
Ontwerpen is een combinatie van logisch redeneren en het creatief combineren van …
Ontwerpen is een combinatie van logisch redeneren en het creatief combineren van bestaande technieken om tot nieuwe, innovatieve ideeen te komen. Een goede werktuigkundig ontwerper put zijn creativiteit uit kennis van een groot aantal bestaande werktuigbouwkundige systemen. Hoe groter die kennis, hoe groter de kans dat nieuwe, innovatieve ontwerpconcepten ontstaan. Vooral kennis over niet-conventionele techniek bevordert dit creatieve ontwerpproces.
Het doel van het vak Evolving Design is om studenten de onderhavige werkprincipes te tonen van een grote hoeveelheid niet-conventionele werktuigbouwkundige systemen. Er wordt hierbij zowel gekeken naar bijzondere ontdekkingen uit het verleden als uit het heden, met een blik op de toekomst. De ontwerpprincipes worden niet simpelweg opgesomd, maar geplaatst in hun fascinerende, historische ontwikkeling om te laten zien hoe de ontwerpers hun creativiteit en vernuft gebruik(t)en om goedwerkende oplossingen te vinden binnen de beperkingen van de beschikbare fabricageprocessen en beschermingsmogelijkheden (patenten). Veel oplossingen uit het verleden zijn klaar om te worden toegepast in de technologie van de toekomst!
Het vak richt zich primair op het kwalitatief beschrijven van de werkprincipes van bestaande technologieen, met de nadruk op bewegende mechanische constructies. Hoewel het kwantatief, in detail uitwerken van de kracht-bewegingsvergelijkingen niet het hoofddoel van het vak is, zijn mechanische vergelijkingen wel essentieel als zij leiden tot een beter begrip.
A hypothetical scenario is introduced in which the class is asked to …
A hypothetical scenario is introduced in which the class is asked to apply their understanding of the forces that drive natural selection to prepare a proposal along with an environmental consulting company to help clean up an area near their school that is contaminated with trichloroethylene (TCE). Students use the Avida-ED software application to test hypotheses for evolving (engineering) a strain of bacteria that can biodegrade TCE, resulting in a non-hazardous clean-up solution. Conduct this design challenge activity after completion of the introduction to digital evolution activity, Studying Evolution with Digital Organisms.
Students apply what they know about light polarization and attenuation (learned in …
Students apply what they know about light polarization and attenuation (learned in the associated lesson) to design, build, test, refine and then advertise their prototypes for more effective sunglasses. Presented as a hypothetical design scenario, students act as engineers who are challenged to create improved sunglasses that reduce glare and lower light intensity while increasing eye protection from UVA and UVB radiation compared to an existing model of sunglasses—and make them as inexpensive as possible. They use a light meter to measure and compare light intensities through the commercial sunglasses and their prototype lenses. They consider the project requirements and constraints in their designs. They brainstorm and evaluate possible design ideas. They keep track of materials costs. They create and present advertisements to the class that promote the sunglasses benefits, using collected data to justify their claims. A grading rubric and reflection handout are provided.
Students conduct an experiment to study the acceleration of a mobile Android …
Students conduct an experiment to study the acceleration of a mobile Android device. During the experiment, they run an application created with MIT's App Inventor that monitors linear acceleration in one-dimension. Students use an acceleration vs. time equation to construct an approximate velocity vs. time graph. Students will understand the relationship between the object's mass and acceleration and how that relates to the force applied to the object, which is Newton's second law of motion.
In this activity, students will explore two given websites to gather information …
In this activity, students will explore two given websites to gather information on Bone Mineral Density and how it is measured. They will also learn about X-rays in general, how they work and their different uses, along with other imaging modalities. They will answer guiding questions as they explore the websites and take a short quiz after to test the knowledge they gained while reading the articles.
Students observe multiple examples of capillary action. First they observe the shape …
Students observe multiple examples of capillary action. First they observe the shape of a glass-water meniscus and explain its shape in terms of the adhesive attraction of the water to the glass. Then they study capillary tubes and observe water climbing due to capillary action in the glass tubes. Finally, students experience a real-world application of capillary action by designing and using "capillary siphons" to filter water.
Through this lesson and its series of hands-on mini-activities, students answer the …
Through this lesson and its series of hands-on mini-activities, students answer the question: How can we investigate and measure the inside of an object or its structure if we cannot take it apart? Unlike the destructive nuclear weapon test (!), nondestructive evaluation (NDE) methods are able to accomplish this. After an introductory slide presentation, small groups rotate through five mini-activity stations: 1) applying Maxwell’s equations, 2) generating currents, 3) creating magnetic fields, 4) solving a system of equations, and 5) understanding why the finite element method (FEM) is important. Through the short experiments, students become familiar with the science and physics being used and make the mathematical connections. They explore components of NDE and see how engineers find unseen flaws and cracks in materials that make aircraft. A pre/post quiz, slide presentation and worksheet are included.
Students learn the basics of the electromagnetic spectrum and how various types …
Students learn the basics of the electromagnetic spectrum and how various types of electromagnetic waves are related in terms of wavelength and energy. In addition, they are introduced to the various types of waves that make up the electromagnetic spectrum including, radio waves, ultraviolet waves, visible light and infrared waves. These topics help inform students before they turn to designing solutions to an overarching engineering challenge question.
Students test and observe the "self-cleaning" lotus effect using a lotus leaf …
Students test and observe the "self-cleaning" lotus effect using a lotus leaf and cloth treated with a synthetic lotus-like superhydrophobic coating. They also observe the Wenzel and Cassie Baxter wetting states by creating and manipulating condensation droplets on the leaf surface. They consider the real-life engineering applications for these amazing water-repellent and self-cleaning properties.
Based on what they have already learned about friction, students formulate hypotheses …
Based on what they have already learned about friction, students formulate hypotheses concerning the effects of weight and contact area on the amount of friction between two surfaces. In the Associated Activities (Does Weight Matter? and Does Area Matter?), students design and conduct simple experiments to test their hypotheses, using procedures similar to those used in the previous lesson (Discovering Friction). An analysis of their data will reveal the importance of weight to normal friction (the friction that occurs as a result of surface roughness) and the importance of surface area to the friction that occurs between smooth surfaces due to molecular attraction. Based on their data, students will also be able to calculate coefficients of friction for the materials tested, and compare these to published values for various materials.
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