Aiden learned about Charles Darwin's theory of evolution by natural selection. He read about the voyage of the HMS Beagle to the Galapagos Islands. He examined figures illustrating how the different climates of the different islands of the Galapagos spurred the evolution of Galapagos tortoises with different adaptations. He watched a video on scientists Peter and Rosemary Grant and their work with Galapagos finches.