The document outlines an activity for students to research and present on great inventions from different time periods. It divides students into groups and assigns each group to research inventions from either the ancient, middle, or modern era, or from Philippine inventions. Each group will choose an invention, illustrate it, and present a board explaining how it works and its impact, with information to be attached on the back. Groups will be evaluated on understanding, creativity, content, presentation, and deadline.