The students made homemade ice cream by placing cream, sugar, and vanilla in jars and then freezing them in a larger jar with ice and salt. They rolled the jars backwards and forwards for four minutes then rested for one minute, repeating this five times total. When they opened the jars, they discovered they had made real ice cream in different flavors, though some batches did not turn out perfectly due to incorrect measurements. The students enjoyed their homemade ice cream treats.