American Chemical Society (ACS) – Hands-On Chemistry
ACS offers a collection of free, hands-on activities and experiments in chemistry.
https://www.acs.org/middleschoolchemistry.html
https://www.acs.org/education/whatischemistry/adventures-in-chemistry/experiments.html
Ask A Biologist – Hands-On Activities
Ask A Biologist offers a variety of free, hands-on biology activities, experiments, and puzzles designed to engage students in learning about the natural world.
https://askabiologist.asu.edu/activities
Exploratorium
The Exploratorium offers free, hands-on science activities that can be done at home or in the classroom.
https://www.exploratorium.edu/activities
How to Smile
A free online collection of high-quality STEM activities for educators, focused on hands-on learning.
Khan Academy – Science Activities
Khan Academy provides free, hands-on activities for middle and high school science.
https://www.khanacademy.org/science/science-activities
NASA eClips
NASA eClips offers a wide range of hands-on STEM activities and multimedia resources, helping students connect classroom learning to real-world science and engineering.
https://nasaeclips.arc.nasa.gov/
NASA’s STEM Engagement
NASA offers free hands-on activities related to space, engineering, and science for students of all ages.
https://www.nasa.gov/learning-resources/search
Science Buddies
Science Buddies provides free project ideas and activities that allow students to explore hands-on science.
https://www.sciencebuddies.org/
TeachEngineering
A digital library of STEM activities, lessons, and curriculum for hands-on and simulation-based learning.