background preloader

Math & Pure sciences

Facebook Twitter

Understanding Evolution For Teachers. Text only version. Science news and science jobs from New Scientist. Gigantic Prime. Water is dangerous. This was found on the newsgroup: rec.humor.funny A student at Eagle Rock Junior High won first prize at the Greater Idaho Falls Science Fair, April 26. He was attempting to show how conditioned we have become to alarmists practicing junk science and spreading fear of everything in our environment. In his project he urged people to sign a petition demanding strict control or total elimination of the chemical "dihydrogen monoxide.

" And for plenty of good reasons, since: it can cause excessive sweating and vomiting it is a major component in acid rain it can cause severe burns in its gaseous state accidental inhalation can kill you it contributes to erosion it decreases effectiveness of automobile brakes it has been found in tumors of terminal cancer patients He asked 50 people if they supported a ban of the chemical. Forty-three (43) said yes, six (6) were undecided, and only one (1) knew that the chemical was water. He feels the conclusion is obvious. Math Help. An Engineers Quick References to Mathematics Algebra Help Math SheetThis algebra reference sheet contains the following algebraic operations addition, subtraction, multiplication, and division.

It also contains associative, commutative, and distributive properties. There are example of arithmetic operations as well as properties of exponents, radicals, inequalities, absolute values, complex numbers, logarithms, and polynomials. This sheet also contains many common factoring examples. There is a description of the quadratic equation as well as step by step instruction to complete the square.Download PDFDownload Image Geometry Math SheetThis geometry help reference sheet contains the circumference and area formulas for the following shapes: square, rectangle, circle, triangle, parallelogram, and trapezoid. It also includes the area of a circular ring as well as the area and segment length of a circular sector.