This document outlines activities for teaching students about inventions that changed the world in the 20th century. It includes: - A discussion about when the 20th century was and inventions students couldn't live without. - An activity where students research the origins of items they use daily, finding details about inventors and inventions from the last 100 years. - Guided research on one invention for students who can't access technology independently. - A lesson on early writing tools and how people communicated before the alphabet. - An introduction to the "Golden Age of Invention" between the 8th-13th centuries, when many impactful inventions were created.