Free Science Unit Studies and Lesson Plans

Science is a fun subject to teach, but coming up with ideas for lessons can be challenging. You don’t need to spend your time scouring the internet looking for science materials. We’ve found many sources of free science unit studies, lesson plans, and experiments. These free resources are perfect for piecing together your own science curriculum based on your children’s interests. They can also be used to supplement any science curriculum.

Free Science Unit Studies, Lesson Plans, and Experiments

Agriculture in the Classroom– Lesson plans covering agriculture, science, social studies, and nutrition. (K – 12th)

American Geosciences Institute– Resources, activities, and more for teaching earth science. (K – 5th)

Better Lesson– Comprehensive lesson plans, experiments, and labs. (K – 12th)

The Biology Corner– Lesson plans, worksheets, and tutorials for students and teachers. (6th – 12th)

Core Knowledge Foundation– Downloadable lessons with teacher guides. (K – 5th)

Discover the Forrest– A collection of outdoor science activities. (K – 12th)

Discover Your Changing World with NOAA– A downloadable book of climate science activities and experiments. (5th – 8th)

Easy Teacher Worksheets– An extensive collection of worksheets covering all branches of science. (K – 12th)

Ecosystem for Kids– Printable worksheets and online activities for earth, physical, life, and environmental science. (1st – 6th)

Education World– A large selection of science lesson plans and activities. (K – 12th)

Funology– A collection of simple science experiments. (K – 6th)

Go Science Girls– 100 science experiments covering a wide range of topics. (K – 12th)

The Good and The Beautiful Marine Biology– A 13-lesson downloadable marine biology unit study. (K – 8th)

GreatSchools.org– Printable worksheets and activities covering a wide variety of topics. (K – 5th)

The Homeschool Daily– Unit studies, printables, experiments, and STEM labs. (K – 8th)

Homeschool Helper Online– Science unit studies covering a variety of topics. (K – 8th)

Homeschool Lesson Plans– Science lesson plans with videos and hands-on activities. (2nd – 9th)

The Homeschool Scientist– Printable lesson plans covering a variety of topics. (K – 8th)

How to Smile– Guides for nearly 3,500 science, technology, engineering, and math (STEM) activities. (K – 12th)

Instructables– Project-based STEM lessons. (1st – 8th)

Inquiry in Action– Inquiry-based lesson plans covering science and chemistry in everyday life. (K – 5th)

Jonathan Bird’s Blue World– Lesson plans and study guides to accompany their ocean science webisodes. (6th – 8th)

Kristin Moon Science– Science lessons, experiments, videos, and teaching ideas. (K – 12th)

Little Bins for Little Hands– Science experiments and STEM activities covering a wide range of topics. (K – 6th)

Meet Penny– A large collection of science experiments. (K – 8th)

Minerals Education Coalition– Lessons plans, activities, presentations, handouts, and more that teach about minerals and mining. (K – 12th)

Nature Works– 16 free episodes about natural science with lesson plans. (3rd – 6th)

Netflix’s Brain Child– Lesson plans and student handouts to use with Netflix’s science program. (3rd – 8th)

NGSS Biology– Biology lesson plans, activities, experiments, worksheets, tests, and more. (6th – 12th)

PBS Learning Media– Lesson plans, videos, and interactive tools for teaching science. (K – 12th)

Polar Bears International– Downloadable units and lesson plans about polar bears. (4th – 12th)

Rain Bird’s Explorations into Water– Downloadable unit study about water, with an emphasis on conservation. (3rd – 6th)

Rain Bird’s Rain Forrest Teaching Curriculum– Ebook of hands-on activities that teach about the rain forest. (K – 12th)

Research Parent– Science activities, experiments, and printables. (K – 12th)

Sanford PROMISE– Science lesson plans, printable resources, slide shows, and videos. (K – 12th)

Scholastic Study Jams– Video and slideshow presentation-based science lessons. (3rd – 6th)

Science Bob– Instructions, some including videos, for a variety of science experiments. (K – 12th)

Science Buddies– Lesson plans and science project guides. (K – 12th)

Science Kids– Science lesson plans, experiments, activities, and more. (K – 12th)

Science Matters– Downloadable units covering earth, life, and physical science. (4th – 6th)

Science Mom QuaranTIME– Video-based science and math lessons with printable notes. (3rd – 6th)

Science Sparks– Science experiments, projects, worksheets, and more. (K – 6th)

SERC K12 Science– Hundreds of hands-on activities and labs that include student handouts. (K – 12)

Think Earth– Downloadable units that cover environmental education. (K – 5th)

Try Engineering– A database of lesson plans that teach engineering concepts. (K – 12th)

UCAR Center for Science Education– A collection of activities and curriculum units that teach earth science. (K – 12)

Woo! Jr. Kids Activities– Science worksheets, lessons, and experiments. (K – 6th)

You Be the Chemist– Activity guides for hands-on science experiences. (K – 8th)

Additional Free Science Resources

Science and Nature Study Curriculum– Free curriculum for all grades

Homeschool Science with YouTube– Learn about science with these YouTube channels.

Virtual Science Labs and Dissections– No lab equipment is needed with these free virtual science labs, dissections, and simulations.

Science Websites for Homeschoolers– Learn more about science with these informative websites.

Virtual Field Trips– Explore the world, including many science topics, through virtual field trips.

Note: This post was originally published on April 20, 2020 and has been updated for accuracy and comprehensiveness.