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At Right Angles March 2015


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The lead feature in the March 2015 issue of AtRiA is based on the theme Proof Without Words. In the Review section, Mark Kleiner discusses Edward Frenkel's Love and Math - the Heart of Hidden Reality. Thomas Lingefjard, in his article Learning Math with a DGE system, addresses a pressing need of teachers using technology in the classroom. This issue features a new author Ali Hussen whose article weaves in algebra, geometry and arithmetic. It also introduces a new series on Low Floor High Ceiling activities.The pullout continues on the Teaching of Geometry (part ii).

   
Editorial

Sneha Titus
Editorial


 

Content


Content


 

Features

V G Tikekar
PWW Viviani's theorem


 
 
CoMac
On proofs without words

 

Ali Ibrahim Hussen
Square roots and cube roots


 
 
Shailesh Shirali
'Understanding the formulas for Square roots and cube roots'

 

Punya Mishra & Gaurav Bhatnagar
Paradoxes-I


 

In The Classroom

Shailesh Shirali
Generalization And Specialization


 
 
A Ramachandran
Angle bisectors in a quadrilateral

 

Shailesh A Shirali
How to prove it


 
 
Swati Sircar & Sneha Titus
Investigations with Pentominoes (Low floor high ceiling tasks)


 

Tech Space


Thomas Lingefjärd
Learning Mathematics with a DGE System


 
Problem Corner


CoMac
Adventures in Problem Solving


 
 
R Athmaraman
Middle Problems


 

Prithwijit De and Shailesh A Shirali
Senior Problems


 
 
CoMac
Extra Problem (Triangle in Rectangle)


 

Reviews


Mark Kleiner
Review of "Love and Math"

 

Pullout


Padmapriya Shirali
Geometry- II

 


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