Explore free science teaching materials, phenomenon-based lessons, interactive simulations, classroom investigations and educator resources. Browse resources by teaching need, including NSTA’s free collection.
Some sites may offer optional accounts or additional services; linked educational resources are available free of charge.
Resources linked here have free-to-access educational content. Some require free registration or limit monthly access; physical supplies, optional upgrades and separate services may cost extra.
Lesson plans & teaching libraries
Smithsonian Science & Nature Resources
PK–12 science and nature learning materials, investigations and educator guides.
Explore free resource ↗Smithsonian Learning Lab
Build or adapt classroom collections using Smithsonian digital resources.
Explore free resource ↗NASA Learn with NASA
Grade-banded science lessons, activities and printables for K–12 educators.
Explore free resource ↗NASA Science Resource Catalog
Search NASA activities by subject and resource type.
Explore free resource ↗Interactive science & simulations
PhET Interactive Simulations
Free interactive physics, chemistry, biology, and Earth science simulations.
Explore free resource ↗NASA Digital Learning
Ready-to-use digital science resources and investigations.
Explore free resource ↗Smithsonian Learning Lab Science Collections
Explore and customize free science collections for classroom use.
Explore free resource ↗Earth, space & environmental science
NASA Lessons & Activities
Space and Earth science activities for educators and learners.
Explore free resource ↗Smithsonian Ocean Portal
Ocean science background, educational resources and lesson plans.
Explore free resource ↗NASA Science Learning Resources
Activities and resources on astronomy, Earth science and more.
Explore free resource ↗Smithsonian Conservation Classroom
Free conservation lessons for elementary classrooms.
Explore free resource ↗Educator development & planning
NASA Professional Learning
Educator-focused science learning opportunities and on-demand resources.
Explore free resource ↗PhET Teaching Resources
Simulation-specific teacher tips and community-created activities.
Explore free resource ↗Smithsonian Educator Resources
Free digital museum-based teaching materials and science activities.
Explore free resource ↗NSTA free teaching resources
NSTA Free Resources
Explore NSTA’s collection of free lesson plans, selected book chapters and featured teaching materials.
Explore free resource ↗NSTA Instructional Materials
Find phenomenon-based Daily Do lesson plans and related instructional sequences. Free registration or access limits may apply.
Explore free resource ↗NSTA Daily Do Playlists
Browse related science sensemaking lessons for classroom instruction. Free registration or access limits may apply.
Explore free resource ↗NCCSTS Case Collection
Find peer-reviewed science case studies featured by NSTA; check individual access and classroom-use conditions.
Explore free resource ↗Additional free science teaching options
NOAA Education
Ocean, weather and climate educational resources for classroom exploration.
Explore free resource ↗USGS Education
Earth science maps, data and teaching resources.
Explore free resource ↗HHMI BioInteractive
Free biology classroom videos, activities and interactive resources.
Explore free resource ↗PBS LearningMedia Science
Browse free classroom science media and accompanying instructional resources; a free account may be useful.
Explore free resource ↗Exploratorium Science Snacks
Hands-on science activities with accessible classroom materials.
Explore free resource ↗Science Buddies Teacher Resources
Browse science projects and lesson plans; some projects require classroom supplies.
Explore free resource ↗
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