Lalit Kishore — a science teaching expert of the Kendriya Vidyalaya Sangathan which runs the highly successful 928 Central government sponsored Kendriya Vidyalaya schools — has experimented with a wide variety of low-cost teaching aids while working with a KVS-sponsored project at the Rajghat Besant School, Varanasi in the 1980s. His book Let’s Put Things Together (co-authored with Anwar Zafri) is the result of his experience there.