After Whittaker became a Fellow of Trinity College he began to teach and give lecture courses and, among his first pupils were G H Hardy and J H Jeans . Whittaker made revolutionary changes to the topics taught at Cambridge.
Pagkatapos Whittaker ay naging isang Fellow ng Trinity College siya ay nagsimulang magturo at magbigay ng panayam at mga kurso, kabilang ang kanyang unang nag-aaral ay gh Hardy at JH maong. Whittaker ginawa rebolusyonaryong pagbabago sa mga paksa ang nagtuturo sa Cambridge.