"SuperTeacherTools.com is dedicated to providing technology tools for teaching that are quick and easy to download, learn, and start using in your classroom.
In the site, you will find a variety of review games, classroom management software, and other miscellaneous tools for educators"
None of the following puzzles has a trick answer, or unwarranted assumptions. They are arranged approximately in order of difficulty; the first few can be done by elementary school children, but they may need to be taught how to think. I tried to include a wide variety of types of puzzles, so that each would teach a new lesson in finding creative solutions by breaking a variety of kinds of mental blocks. Moreover, most of them can be solved mentally by using a judicious point of view.
Beyond the excellent explanations available in these animations, this site could offer great examples of technical writing/writing-to-teach that we might want to explore as useful assignments for students--even if they just designed the animation and did not produce it. Check out the hedge fund video--informative!
"The Faculty Project is a series of free online courses developed by professors from top-notch universities including Northwestern, Dartmouth, and Vassar. The courses will be conducted through Udemy's platform of video, slides, and PDFs. While it's not clear if the professors will or will not be checking-in on the courses, there are discussion boards for students in each course to correspond with each other."
Series of instructional material for students in the science areas; includes AP Chemistry, AP Biology, AP Physics, Astronomy, Earth Science, and Calculus.