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## A Counter-intuitive PYTHAGOREAN SURPRISE

Imagine a tightly stretched rope from one end of the field to be 100m; so the length of the rope is 100m. Now replace this rope by one that is slightly longer, say by 20 cm. There is some slack in the rope, so we should be able to lift the midpoint of the rope to some height. Imagine pinching the rope at its midpoint and raising the rope till it is taut. Question: To what height can you raise the midpoint?

## From Regular Pentagons to the Icosahedron via the Golden Ratio - Part 1

This series of articles will explore an amazing connection between three different objects in mathematics: the regular pentagon, the Golden Ratio and the icosahedron. Obviously, if the Golden Ratio is involved then the Fibonacci sequence can’t be far behind and, if the icosahedron is, so is its dual the dodecahedron!

## Teacher Lead Science Fair at Malpura, Rajasthan

I am sharing my experience of seven Science Fairs which were held in different schools of Malpura block in 2019 and which was inspired by one Science Fair held in 2018 (Malpura). The best part of these fairs was the deep involvement of the Science teachers from all these schools.

## π Enters the 5th Class

I write this to tell myself that it was not a dream...

This year I taught a bunch of fifth standard kids in Sahyadri School KFI (Krishnamurti Foundation India), who, like all others of their age, were high-energy kids; they were willing to explore but found it difficult to sit down in one place. I had a great relationship with them. The air in the classroom was of love, trust and wonder!

## Evolving Perception of Teaching and Learning Materials

Materials can be important for helping children learn. The very young child learns in interaction with and acting on the objects around her. In the beginning, the senses, motor abilities and subsequent causal analysis develops through their observations of the things around and their behaviour in different circumstances. This interaction with materials is spontaneous and directed by the child. The manner of interaction is decided by her and often their explorations do not meet with the approval of the adults.

## iB Hubs Super 30 Teachers - Nominate Now

Hrithik Roshan starrer Super 30 joins hands with iB Hubs Talent Accelerator to introduce ‘iB Hubs Super 30’ to honor and salute inspiring teachers who made a difference in our lives.

## Initiative Towards Quality Education

Education is a prime concern of society. Naturally both as individuals and as a society we always think about a better education for all round growth and development of the individual and, ultimately, society. Today the term quality education has gained pace and is a matter of concern and debate among educationists and even common people. In fact education itself is qualitative in nature and outcome. The matter of discussion or concern should be the process, the contents etc.

## Fun with Magnets

The interesting nature of magnets attracts everyone, from playing with magnets for fun to using appliances with magnets, we find them everywhere around us. Our students usually have some experience around magnets, here is a lesson plan which can guide them through the nature and properties of magnets including their uses.

## How to Make a Simple Toy Motor Boat

This electric motor boat is easy to make and can be seen sailing in a bath tub or a small pond.

Materials Required:

two plastic bottle, two pencils (find used pen instead or bamboo stick of same size), hard cardboard (instead of popsicles), a small dc motor, propellor (you can make yourself with a plastic bottle), cello tape, soldering iron, glue (fevibond will work)

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