These free online STEM resources have fun activity ideas for students with fully developed lesson plans for teachers or homeschool parents. Listed out by Science, Techonology, Engineering, Math, and grade level.
Paper Clip Chain: Engineering Challenge Project ~ Great STEM Activity
Makerspace STEM Challenge CardsA Makerspace is a places where people and ideas come together to design, explore, build, and create! Makerspaces incorporate STEM and STEAM learning activities and design challenges to allow kids to learn through creating.
These are an idea we implemented into our school building last year as a way to really engage teachers and students into the STEM way of thinking! They are designed to be done whenever the teacher wants to do them, with easy to find (and cheap) supplies.