Using only elementary geometry, determine angle x. Provide a step-by-step proof.
You may only use elementary geometry, such as the fact that the angles of a triangle add up to 180 degrees and the basic congruent triangle rules (side-angle-side, etc.). You may not use more advanced trigonomery, such as the law of sines, the law of cosines, etc. There is a review of elementary geometry below.
A conversation with Jeremy Roschelle about technology in K-12 math and science education.
Discover what parents around the world are finding……that with Active Allowance's easy-to-use online tools, they're:
* Teaching their children values and skills that will help them now and later in life
* Helping their homes run smoothly
Research shows that the difference between what is taught and what is learned is often greater than most instructors realize. Lillian McDermott from the University of Washington discusses current and future trends in math and science education.
Number Theory, Combinatorics, Geometry, Algebra, Calculus, etc...
This is fairly hilarious to math geeks. It assigns a piano key with a value and plays "pi" to 1,000 places. It's quite beautiful ; )
Math is the language of symbols. The way we work with numbers tells us a lot about their relationships, patterns, and the ways they change. Math helps us describe both similarities and differences and also helps us think and solve practical problems.
A cute trick to sketching an approximate visual representation of polynomials.
RSS for user "aseldow: math + k-12"
Using only elementary geometry, determine angle x. Provide a step-by-step proof. You may only use elementary geometry, such as the fact that the angles of a triangle add up to 180 degrees and the basic congruent triangle rules (side-angle-side, etc.). You may not use more advanced trigonomery, such as the law of sines, the law of cosines, etc. There is a review of elementary geometry below.
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