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Triangle in a Rectangle

By At Right Angles | Mar 26, 2015

Find the area of an inscribled triangle...

Problems for the Senior School - March 2015

By At Right Angles | Mar 26, 2015

The problems in this set are adapted from the Romanian Mathematical Competitions, 2014. Also find solutions to the problems in the November 2014 issue.

Going beyond the problem

By TeacherPlus | Mar 19, 2015

A first- person account of two teachers— one who labelled a child as ‘not capable’ and another, who probed deeper to find out what was wrong with the child. It is your guess as to which teacher won the confidence of the child.

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A Nines Multiples Problem

By At Right Angles | Dec 23, 2014

CoMaC shares a problem on the sum of digits adapted from one that appeared in an online column on the Math Forum site.

Two Combinatorial Problems

By At Right Angles | Dec 23, 2014
Here are some problems that were posed in a recent mathematics contests...

Hill Ciphers: Solutions

By At Right Angles | Dec 18, 2014

Here are the the solutions to the exercises. 

First and last digits of perfect squares

By At Right Angles | Jul 21, 2014

Find the smallest perfect square N whose digits start with 1234567.

Problems for the Middle School - July 2014

By At Right Angles | Jul 21, 2014

Here are some problems for the Middle School. Also find the solutions to the problems given in AtRiA Mar 2014 issue.

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