At Right Angles

December 2012

In this issue, which appropriately featured Srinivasa Ramanujan on the cover, we started with Lagrange’s Four Squares Theorem followed by articles on games of chance; on the axiomatic basis of origami, and an unexpected construction possible under the rules of paper folding; on a beautiful theorem of Euclidean geometry called Viviani’s theorem; and on using a spreadsheet to explore the famous conundrum known as the ‘Monty Hall problem’. We also covered one of the premier events in mathematics...read more

At Right Angles

June 2012

With this issue we started the publication of a national level magazine, addressed directly to teachers and students at the middle and high school level. The inaugural issue had a lot of material on the Pythagorean theorem and on themes related to this theorem. There was a ‘proof without words’ from the late Prof A R Rao; articles on paper folding, on the use of spreadsheets, on a way of classifying quadrilaterals, on the use of math portfolios in teaching, and on teaching fractions at the pr...read more