Very good stuff here. Nice mathematics, nice symmetry, nice visually! Nice paper with an explanation of what is going on by Carmen Melliger here. Good mathematics! Nice graphic by Shana McKay from Scaffolded Math. See also.
Category: Algebra
Nov 19
The CCSSM, and now the new SAT, have Moved the Needle
Introduction Two days ago I was at an excellent presentation on the new SAT test. It was at the WIU Mini Conference on Secondary Mathematics Teaching. For the second time in 3 years, I experienced, in one 40-minute presentation, a paradigm shift. I was very impressed by what I saw with the new SAT. I …
Aug 10
Memoranda Mathematica: A Synopsis of Facts, Formulae, and Methods (1912 book)
At this the MathFest (Washington DC 2015) lecture by Richard Guy and John Conway I learned of a book from 1912. Probably only of interest to math geeks. (yep math geek alert) I find it interesting that this reference book begins with the divisibility test for 9 and for 11 and the usefulness of knowing …
Jun 05
Great Reference Sheets (Math)
EEWeb has a very good Math Help page with numerous Quick Reference Sheets Algebra – Properties Geometry – Shapes and Solids Trigonometry – Definition (has unit circle) Trigonometry – Laws and Identities Calculus – Derivatives and Limits Calculus – Integrals BTW – for printing purposes, it worked better for me to download them (PDF’s) and …
Mar 27
Spotting Numbers and Visual Patterns
Here a two great websites that provide lots of great pattern problems. Spotting Numbers Visual Patterns These patterns can be used with elementary students (if you just ask number questions) through advanced algebra (if you include questions about functions). Mathematics is often described as the study of patterns. That is exactly what Spotting Numbers and …
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