This fully customizable free resource for the 100th day of school is designed as a way to connect science, math, engineering, and technology concepts with the history of contributions to science and math careers. The STEM activity is divided into two parts. First, introduce students to up to 5 inventions created 100 years ago, or assign students to do their own research to find inventions. The second part walks students through the engineering design process allowing them to come up with their o