A special song is sung to teach kids about attributes of reflection and how to pinpoint reflections of shapes. Bad man tests children on their ability to reflect shapes.
It is described how many tribes were drawn to live near the Nile River, and how these were united to form Egypt under Menes. The narrator then describes how canals were built, and how they became ancient Egypt's main system of transport. It is then detailed how ancient Egyptians took advantage of canals and what particular commodities were transported through the canals.
In this clip, Charlie suggests using an evolutionary algorithm to search for abnormal behavior after a murder occurs in a video game with a real-life component. Evolutionary algorithms imitate the biological process of natural selection to find optimal solutions.