A speaker is a device that converts an electronic signal into
sound. The speaker you will build (see figure 1) consists of a Styrofoam or
paper cup, a coil of wire, a permanent magnet, and a signal source. The
electronic signal goes through the coil and creates a varying electromagnet.
The attraction and repulsion between the electromagnet and the permanent
magnet cause the cup to vibrate and produce sound.
Group items matching
in title, tags, annotations or url
Speaker Lab - 29 views
-
-
-
Student should work in groups of 2 to 3.
-
How to Help Kids Overcome Fear of Failure | Greater Good - 22 views
Found in Translation - 28 views
-
Language life at UC Berkeley and beyond. Relfections on meaning, language use, cultural means of expression, status of languages, and more.
Connect to a Chorus of Voices - 35 views
-
"A collection of stories is the way to rewrite a singular history that has been in textbooks....I think it takes a lot of people telling a lot of stories about what their experience has been, what the experience of their ancestors has been." The speaker is Tommy Orange, an Oakland-based media consultant, writer, and digital storyteller who is an enrolled member of the Southern Cheyenne and Arapaho Tribes of Oklahoma and describes himself as "a father, a son, a brother, an uncle, a partner, a storyteller, and a committed member and servant of his community." For Issue #3 of The Republic of Stories, our quarterly online publication, Arlene Goldbard interviewed Tommy and Tony Platt, author of books inlcuding Grave Matters: Excavating California's Buried Past, who lives in Berkeley and Big Lagoon, California, and serves as secretary of the Coalition to Protect Yurok Cultural Legacies at O-pyuweg (Big Lagoon).
edX - 42 views
-
Free online college courses offered from MIT, Harvard, Berkeley, etc
Coursera.org - 12 views
-
Coursera offers courses from the top universities, for free. Learn from world-class professors, watch high quality lectures, achieve mastery via interactive exercises, and collaborate with a global community of students. -
We offer high quality courses from the top universities, for free to everyone. We currently host courses from Princeton University, Stanford University, University of California, Berkeley, University of Michigan-Ann Arbor, and University of Pennsylvania. We are changing the face of education globally, and we invite you to join us. -
Free online courses from around the world
How to Save College | The Awl - 23 views
-
"I wrote a thing last fall about massive open online courses (MOOCs, in the parlance), and the challenge that free or cheap online classes pose to business as usual in higher ed. In that piece, I compared the people running colleges today to music industry executives in the age of Napster. (This was not a flattering comparison.) Aaron Bady, a cultural critic and doctoral candidate at Berkeley, objected. I replied to Bady, one thing led to another, the slippery slope was slupped, and Maria Bustillos ended up refereeing the whole thing here on The Awl."
Evaluating Web Pages: Techniques to Apply & Questions to Ask - 8 views
-
additional sites
-
footnote numbers
-
Reputable? Scholarly
- ...11 more annotations...
-
Finding Information on the Internet: A Tutorial Techniques to Apply & Questions to Ask -
Awesome for use with evaluating web sources. Link to PDF of checklists is helpful for in-class use.
Health - 0 views
-
The World Health Organization (WHO) estimates that exposure to smoke from the simple act of cooking is the fifth worst risk factor for disease in developing countries, and causes almost two million premature deaths per year – exceeding deaths attributable to malaria or tuberculosis.
-
Women in developing countries are also at risk of head and spinal injuries, pregnancy complications, and maternal mortality from the strenuous task of carrying heavy loads of firewood or other fuels. Frequent exposure to cookstove smoke can also cause disabling health impacts like cataracts, which affect women more than men, and is the leading cause of blindness in developing countries.
-
Rudimentary wood-fired cookstoves and open fires emit fine particles, carbon monoxide, and other pollutants at levels up to 100 times higher than the recommended limits set by WHO
- ...5 more annotations...
-
This is the Global alliance for Clean Cookstoves website. They offer much information about the issues surrounding the topic and their action plan for affecting change!
CS10 : BJC (The Beauty and Joy of Computing) | UC Berkeley EECS | Spring 2013 - 36 views
-
Building a CS program at your school? UC Berkeley leads the charge!
Math for America - Fellowships, Teach in New York City, Berkeley, Boston, Los Angeles, San Diego, Utah, Washington DC, Math Resources, Math Education - 1 views
-
We are a nonprofit organization with a mission to improve mathematics education in US public secondary schools by recruiting, training and retaining outstanding mathematics teachers.
WISE - Web-based Inquiry Science Environment - 0 views
-
Harness the power of the Internet... wisely. WISE is a simple yet powerful learning environment where students examine real world evidence and analyze current scientific controversies.
Build a fish - 126 views
-
A useful science resource about many ocean habitats and the adaptions fish have to survive there. Design your fish to thrive in the habitat. http://ictmagic.wikispaces.com/Science
Mr. Foxhole's Classroom: Cal Berkeley: Teaching with Excelence - 3 views
Understanding Science - 76 views
Baby Baiting | The Nation - 0 views
-
Like the slur "anchor baby" itself, each of these claims is a fallacy. Far from "anchoring" their parents to US soil, many children born to undocumented immigrants are seeing them be deported. And for all the rhetoric spewed by the right about the need for tough new legislation to combat the immigrant "invasion," laws governing immigration to the United States have gotten more restrictive in the past fifteen years. Today, a citizen must be 21 in order to sponsor the green card application of a parent or an immediate relative. The applicant must then show documentation proving that he or she has not been in the United States unlawfully for more than one year. Barring such proof—the primary obstacle most immigrants face—the parent must return to the country of origin for ten years before being allowed to lawfully re-enter the United States and resume the application process. This is commonly referred to as the "touchback rule," explains María Blanco, director of the Earl Warren Institute at the UC, Berkeley, School of Law, and it is among the most insurmountable restrictions placed on the legal naturalization process in the name of "immigration reform" passed in 1996.
Priv3: Practical Third-Party Privacy - 34 views
-
"The Priv3 Firefox extension lets you remain logged in to the social networking sites you use and still browse the web, knowing that those third-party sites only learn where you go on the web when you want them to. All this happens transparently, without the need to maintain any filters. Priv3 is free to use for anyone. "
How science works - 107 views
-
Why the "scientific method" as taught K12 is not realistic, and not as much fun as the real thing - and how to teach that instead. Good activities.
How science works: The flowchart - 194 views
-
-
Reminder that science is not linear in practice nor in gathering information. Work your way through the site to the lab/activities.
-
Excellent visual.
-
-
process of scientific inquiry
-
Most ideas take a circuitous path through the process
-
A flowchart depicting the process of scientific inquiry (nature of science). Can trace the development of different ideas. Gives a visual representation that the "scientific method" is not a rigid, sequential process that goes automatically from one step to the next.