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At Right Angles July 2018


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And it’s out! Most of you would have already received your copy of the July issue of At Right Angles, here’s the official announcement and the link with the welcome news that AtRiA is finally a whole school math resource! The shift all the way to Primary is marked with several new sub-sections in ClassRoom: from Sense-Making in Mathematics – the cover says it all- to TearOut- where all a busy teacher has to do is to tear out a ready made worksheet – complete with facilitator notes- and use it to challenge students to think in fun mathematical ways. As always, PullOut shares strategies and tips on a specific theme, this time we continue our series on Algebra.

And to top it all, we have not one but two students contributing articles to the Features section, no less! Enjoy a great read!

   
Editorial

Sneha Titus
Editorial


 

Features

Aradhana Anand
Creating Trigonometric Tables


 
 
Shuborno Das
Functional Equations Part 1


 

Shailesh Shirali
Constants of Mathematics Part 1


 
 
V G Tikekar
Addendum to Power Triangle


 

Classroom

Jagathapu Kasi Rao
Bisecting an Angle Using a Ruler


 
 
Shailesh Shirali
On the GCD and LCM of Fractions

 

Rajagopalan RVS
A Curious Counting Result


 
 
Swati Sircar, Sneha Titus
LFHC: Four-telling Quadrilaterals


 

Swati Sircar
Exploring Properties of Addition with Whole Numbers and Fractions


 
 
Shailaja D Sharma
Visual Method for Fraction Multiplication


 

Rupesh Gesota
Making Sense of Adding Unlike Fractions


 
 
Swati Sircar
TearOut: Fun with Dot Sheets

 

A Ramachandran
Mapping Triangle Shapes


 
 
Moshe Stupel and David Fraivert
Formulas for Special Segments in a Triangle

 

Shailesh Shirali
Theorem Concerning a Magic Triangle


 
 
CoMac
Characterisation of a Right Triangle

 

Shailesh Shirali
How to Prove it


 
 
CoMac
An Angle-in-a-Quadrilateral Problem

 

Tech Space


Jonaki B Ghosh & Rohit Adsule
One Dimensional Cellular Automata: The Totalistic Approach


 

Problem Corner


A Ramachandran
Problems for the Middle School

 
 
Sanjib Rudra
Alternative Solution to ‘A Triangle Problem’

 

Prithwijit De and Shailesh Shirali
Problems for the Senior School


 
 
Shailesh Shirali
Adventures in Problem Solving

 

Prithwijit De
The Odd-Even Tale


 
 
CoMac
The Three Circles Problem

 

CoMac
Problem About a Finite Sequence


 

Reviews


Reviewed by Sneha Titus
The Gentle Man Who Taught Infinity


 
 
Reviewed by Sneha Titus
Mini Review - Numero Friendly Board Games


 
Pullout


PadmaPriya Shirali
Introduction to Algebra - II

 


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