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Java applets some of which the website claims may be used for assessment. E.g. Venn, Fractions, Geometry Lots for Grades 3-8

These pages demonstrate visual phenomena, and »optical« or »visual illusions«. The latter is more appropriate, because most effects have their basis in the visual pathway, not in the optics of the eye. When I find the time I will expand the explanations, to the degree that these phenomena are really understood; any nice and thoughtful comment welcome.

A children's book illustrating calculus, slideshow viewable at this website

According to Nancy Kimberly of HASTAC, this set of video games won the 1st National STEM Video Game Challenge: "Numbaland!, produced by graduate students Derek Lomas of Carnegie Mellon University, Dixie Ching of New York University and Jeanine Sun of the University of California at San Diego, was the winner of the Collegiate and Impact Prizes and will receive $50,000 in total. The collection of four games allows children in kindergarten to grade 4 to construct a set of skills that helps develop their sense of number concepts"

Khan explains the concept of the "flipped" classroom. 

if a student can't solve the problem and finds a resource that takes her through the proof step by step?

1,000 Scientists in 1,000 Days volunteer program announced for scientists, mathematicians, engineers: "We seek scientists who are willing to volunteer to advise on curricula, answer a classroom's questions, or visit a school-for instance, to do a lab or to talk about what you do. How much you choose to participate will be up to you."

Companion pamphlet for Kevin Houston's book How to Think Like a Mathematician, outlining ten ways of questioning and reasoning

today hindi news,today news talmi,hindi news www.killdo.de.gg

How to develop a circle equation in algebraic form when the circle touches the horizontal x-axis and learn how algebra is used in geometry to derive the equation of a circle in algebraic form in mathematics.