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HCF

A Diagonal Investigation

By At Right Angles | Jul 12, 2016

This task is designed to give students a feel of how mathematicians ‘work’. It develops the skills of documentation, communication, reasoning and conjecture.

Best of 2015 Classroom Ideas

By Editor English | Dec 30, 2015

Here is a quick rewind of some interesting ideas that got featured on the Teachers of India website. We know it is not final. We know there are very many resources you found it useful that we couldn't feature in this particular list. How about you making your own list and sending it to us. We also invite you to remix ideas from your own experience and share it with larger teacher community. That would be a great bang to start the year!

A Visual Manual for Ganitmala

By Swati Sircar, Shikshamitra | Aug 18, 2015

A visual manual on how to use a ganitmala to show whole numbers, add, subtract, multiply and divide them. Also includes how to show the division algorithm for HCF.

Activities and Questions Around Factorisation

By At Right Angles | Dec 23, 2014
Here is an interesting exercise in factorisation with boundary conditions, for students of upper primary school – classes 5, 6 and 7.

Prime Factorisation

By Srishti Sinha | Feb 13, 2013

Here is one way of decomposing a number into its prime factors.

Other related links:

HCF with Bottle Tops

By T Srinivasan | Aug 23, 2012

Here's a hands on activity to explore the concept of HCF.

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