Colorado History
Colorado Department of Education- Offers primary source sets for elementary teachers and students grades k-6.
Colorado Encyclopedia- An online resource for all things Colorado vetted by top Colorado scholars. Includes articles leveled for 4th, 8th, and 10th grade readers.
Colorado Histories from the Colorado Virtual Library - A collection of biographies of historically important persons with connections in Colorado.
Current Events
Newsela- Teachers can sign up for a free account through Gmail to access non-fiction content and recent news stories.
NewseumED - Free resources on fighting fake news and developing your student's media literacy skills.
PBS Learning Media- Teachers can sign up for the Basic Free Version to access thousands of free, standards-aligned and curriculum targeted digital resources.
Smithsonian TweenTribune- Teachers can sign up for free to curate news articles for their classes to read & take quizzes. All news stories are leveled by grade/lexile.
eBooks
Epic!- Instantly access 25,000 of the best books and videos for kids 12 and under (free for educators).
International Children's Digital Library- A collection of digitized children's books from around the world.
Project Gutenberg- Multi-format digital library of eBooks.
Unite for Literacy- Free online access to a global library of age-appropriate picture books in a number of languages.
General Reference
Awesome Library- Organizes 37,000 carefully reviewed resources for k-12 teachers & students.
Digital Public Library of America- Connects people to the riches held within America's libraries, archives, museums, and other cultural institutions.
Internet Archive- Millions of free books, movies, software, music, websites, and more.
Directory of Open Access Journals (DOAJ)- Curated online directory that indexes and provides access to high-quality, multi-subject, open access, peer-reviewed journals.
Health Sciences & Medicine
PubMed- Provides access to MEDLINE, NLM's database of citations, abstracts, and full text related to the fields of medicine, nursing, dentistry, health care, and preclinical sciences.
Natural Sciences
PubChem- Provides information on the biological activities of small molecules.
Scientific Research
NASA Image and Video Library- 140,000 images, sounds, and video available and publicly searchable online.
National Science Digital Library- Serving science, technology, engineering, and mathematics education.
Safe Search For Kids
Boolify- Teaches young learners how to correctly use a search engine and refine their searches.
Kiddle- Kid-friendly, Google Safe powered search engine for younger learners.
Interland- Adventure-packed online games that put the key lessons of digital citizenship and safety into hands-on practice.