Gaurav Bhatnagar is one of my oldest friends – going back to 8th grade in Modern School, Barakhamba Road. He recently published his first book on Mathematics for kids, titled, Get Smart: Maths Concepts, published by Penguin India. The book also has an associated blog – though it is rather sparsely populated with posts at this moment. This makes him the third school friend of mine to have written a mathematics related book. How cool is that! Congratulations Gaurav!
You can read about the other two authors and their book here.