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SJK Recommends: The World’s Best STEM Resources. Free.

This collection highlights the best STEM teaching resources we found online that can help students learn self-paced and hands-on through videos, online simulations, worksheets, quizzes, and more. They are created by science educators and partner education organizations. Just as all our original content is free, we only recommend external resources that are FREE for teachers.

1. Khan Academy

Khan Academy is deservedly the most famous educational resource online. A personalized learning resource for all ages, with an extensive series of courses on math, science, computing, economics, test prep, and more. Content is organized by learning standard, topic, and age group. Each course includes a series of level-appropriate videos, readings, quizzes, and additional content that students can repeat until they master the skill.

A new content feature is Khanmigo, a paid (but affordable) service that uses artificial intelligence (AI) to generate lesson plans, grading rubrics, homework assignments, or meet other requests.

2. CrashCourse

CrashCourse is a YouTube channel with 15+ million subscribers. It offers hundreds of high-quality educational videos on a wide variety of subjects, including organic chemistry, literature, world history, biology, philosophy, theater, ecology, and more. Playlists organize the content by subject matter, or you can search for individual topics.

CrashCourse partnered with Arizona State University to offer college-preparatory work in a new channel called Study Hall, with some videos cross-featured in a set on CrashCourse’s page.

3. Kurzgesagt

Kurzgesagt is a YouTube channel with 22 million subscribers. It offers animated videos on medicine and biology, space science, “human stuff,” and other topics. Each video explores its topic with “optimistic nihilism” and bright, bold graphics.

4. PBS Eons

PBS Eons is a YouTube channel offering videos on the early history of life on Earth and paleontology. Produced in collaboration with PBS Digital Studios, this channel organizes content by animal or plant group, chronology, and also features a playlist on Darwin.

5. Veritasium

Veritasium is a YouTube channel with 15 million subscribers. It offers videos about science, education, and others. Playlists organize content by topic, including biology, “cool tech,” psychology, space, engineering, physics, math, “controversies and misconceptions,” and more.

6. HHMI BioInteractive: Classroom Resources

HHMI BioInteractive is a subsidiary of Howard Hughes Medical Institute. Their Classroom Resources collection provides activities, videos, and interactive media on high school biology topics including genetics, microbiology, biochemistry, ecology, anatomy, and more. Content is organized into “playlists” by topic or teaching strategy.

7. PhET Interactive Simulations

PhET is a teaching resource based at the University of Colorado at Boulder. Their collection offers research-based science and mathematics simulations on physics, chemistry, math, earth science, and biology topics aimed at high school students.

8. Concord Consortium

The Concord Consortium is a nonprofit educational research and development company focused on STEM. Their STEM Resource Finder gathers scientifically accurate virtual labs and hands-on digital tools covering the topics of chemistry, earth and space science, engineering, life science, mathematics, and physics for all grade levels K-12+.

9. NSTA Case Studies

The National Science Teaching Association (NSTA) is a North American professional educator collective. In this resource, NSTA offers nearly a thousand case studies created or adapted by science teachers and college professors for all grade levels and which cover almost any aspect or topic within science. (Formerly known as the National Center for Case Study Teaching in Science at the University at Buffalo.) Suggested keywords help users begin exploring the collection. While the cases are free to download, teaching notes and answer keys are limited to paid members of NSTA.

10. Our World in Data

The Our World in Data Teaching Hub is affiliated with the University of Oxford. Each resource offers interactive teaching notes, presentation slides, and chart sets for specific upper-grade level topics, including extreme poverty, hunger and malnutrition, global health, population growth, and global education.

11. Data Nuggets

Data Nuggets, affiliated with the University of Michigan, seeks to bring real data from current and ongoing research into the classroom. Nuggets cover topics for all grade levels and focus on environmental and biological sciences, organized in a searchable table. Each offers a teacher guide, student activities, grading rubric, and associated resources.

12. Zooniverse

Zooniverse is a volunteer-based, multi-agency data collaborative. Volunteers – including students – will study authentic objects of interest gathered by researchers, like images of faraway galaxies, historical records and diaries, or videos of animals in their natural habitats, and help classify the data by answering questions about what they observe. Content is organized by project, sortable by academic discipline.

13. LabXchange

LabXchange is a “global science classroom open to every curious mind” affiliated with Harvard University. Resources target upper-grade level students and are organized by “cluster,” like chemistry, biology, physics, earth and space science, and more. Each resource gathers simulations, video and text-based lessons, and additional videos and teaching guides for the selected topic.

14. GAVI, The Vaccine Alliance

VaccinesWork is a digital platform of GAVI, The Vaccine Alliance, gathering news and educational resources about global health and immunization for all ages. Content is primarily readings and videos, but they also feature an interactive historical timeline of the history of medicine.

15. Skype-A-Scientist

Skype-A-Scientist is a crowd-funded nonprofit that links real researchers to your classroom. Teachers sign up, and this organization matches them to a scientist who can virtually visit and interact with their students. Matches will be tailored to topic and grade level. They also host scheduled livestreams.

16. Teach Engineering

Teach Engineering is a resource collection for all grades affiliated with the University of Colorado at Boulder. Content focuses on engineering foundations in math, physics, design thinking, and more. It can be browsed by level, topic, standard, or delivery format, such as activities, lessons, maker challenges, living labs, and more.

17. National Park Service

The National Park Service is a US federal entity founded in 1913 to safeguard and steward our natural resources. Its Educator Resources collection gathers distance learning, field trips, lesson plans, and other activities focused on specific national parks and general subjects in math, biology, ecology, social studies, and more. Content is available for all grade levels and organized by park, subject, delivery format, and Common Core standard.

18. CDC

In their Teacher Resources collection, the Centers for Disease Control and Prevention (CDC) highlights approachable public health content for elementary school, and for middle and high school. Resources include “enrichment modules” related to the CDC Museum content, interactive lessons and activities, and an interactive tool called Virtual Healthy School.

19. iNaturalist and “Seek by iNaturalist” App

iNaturalist is a crowd-sourced species identification system and recording tool used to share biodiversity information across the globe, founded in 2008 by researchers at the University of California, Berkeley’s School of Information. Their app, Seek, allows students to explore the power of iNaturalist by creating datasets with their own observations taken from their mobile device – without negatively influencing the quality or rigor of the full iNaturalist dataset. iNaturalist’s Teacher’s Guide includes suggestions for going offline, as well as providing additional instructional options for practicing gathering field observations and working with these data. It links to many examples of teachers using iNaturalist and Seek in the classroom. While the app is rated for all ages (4+ years old), digital privacy rules may limit accessibility to upper-grade levels.

20. NASA

In their Learning Resources collection, the National Aeronautics and Space Administration (NASA) curates a wide array of STEM learning content for all ages focused on topics related to space exploration. Topics are grouped thematically and include Humans in Space, Earth & Climate, The Solar System, The Universe, Science, Aeronautics, and Technology. The STEM Search Tool presents a table of these resources filterable by audience, subject, grade level, and content type.

21. NOAA

The National Oceanic and Atmospheric Administration (NOAA) resource collections provide datasets, lesson plans, and hands-on activities for all ages. The collection highlights thematic groups of content on oceans and coasts, weather and atmosphere, climate, marine life, and freshwater. The Sea to Sky collection presents all content in a table sortable by audience, subject, resource type, standards, or searchable by keyword.

That’s Not All!

Check out our complete collection of External Resources, which highlight free, partner-created lesson plans on a specific teaching topic.

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