Robots, a project and Amelia Earhart

To write about an invention we build sentences from short facts. Examples: Paper – China, traditionally credited to Cai Lun around AD 105; Compass – developed in China, sailors later used a magnetic needle to find direction; Eyeglasses – appeared in Italy in the late 13th century; Telescope – 1608 in the Netherlands, and in 1609 Galileo pointed one at the sky; Vaccine – Edward Jenner used the first smallpox vaccine in 1796. Use passive and active sentences together. Presentation plan: 1) name of the invention; 2) who and when; 3) what it is used for; 4) why it is useful. Finish: I think ... is the most useful invention because ... .