The 13 Most Important Numbers in the Universe - James D. Stein's Cosmic Numbers In the 17th century, scientists understood three phases of matter—solids, liquids and gases (the discovery of plasma, the fourth phase of matter, lay centuries in the future). Back then, solids and liquids were much harder to work with than gases because changes in solids and liquids were difficult to measure with the equipment of the time. So many experimentalists played around with gases to try to deduce fundamental physical laws.
Tech Literacy II: Skills for the Online Instructor "Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is the most important." — Bill Gates Maybe you have been tapped to offer a popular course via the Internet, or you are looking to take advantage of the growing opportunities available to expand your professional portfolio. Online teaching has many advantages for students and teachers, such as 24-hour availability and a wealth of readily available resources. But it also has significant disadvantages, such as a lack of face-to-face contact and the distraction of being just a click away from online games not related to the course. However, if you are willing to embrace the strengths and weaknesses of the medium, you can open the doors to an outstanding educational experience for your students and yourself.
Over 20 Free Digital Classroom Tools… Customize… Plus No Log In This is a site that you are bound to find useful in your classroom. The tools are incredible and may even include items you have used on paper in the past… but can now bring digitally into the 21st century! Before this informative journey encompassing some engaging resources please take a moment and sign up by email or RSS. Marketing for Libraries What do people want and need from a library? What services can your library provide? How can services be connected with the needs of current and potential library users? Marketing is much more than creating attractive displays and updating your Facebook page, it's about meeting the needs of individuals and groups. Garbology Featured Activity: Waste-Less Lunch Lead your students in learning about natural resources used in common packaging materials. Challenge your students to conserve natural resources through their lunch choices. Check out this and other Garbology lessons for the classroom »
The History of Encryption The History of Encryption 700 BC Scytale The Spartan military used scytales to send sensitive missives during times of battle. Both sender and recipient had a wooden rod of the exact diameter and length. To encrypt a message, the sender tightly wound a piece of leather or parchment around the stick and wrote a message on it. The unwound leather was sent to the recipient, who could only read a message once it was tightly wound around his own scytale. 10 Tools to Help you Flip Your Classroom Two years ago I "flipped" my high school Anatomy & Physiology class. Read my previous post for the full story. I learned by trial and error.
The Best Web 2.0 Applications For Education In 2011 — So Far I usually just do a year-end list on Web 2.0 Applications For Education and many other topics, but it gets a little crazy having to review all of my zillion posts at once. So, to make it easier for me — and perhaps, to make it a little more useful to readers — I’m going to start publishing mid-year lists, too. These won’t be ranked, unlike my year-end “The Best…” lists, and just because a site appears on a mid-year list doesn’t guarantee it will be included in an end-of-the-year one. But, at least, I won’t have to review all my year’s posts in December… As usual, in order to make this list, a site had to be: * accessible to English Language Learners and non-tech savvy users.