Rachel Archive
Wikipedia for Schools

Wikipedia for Schools

This curated selection of articles from Wikipedia can be used offline by school children around the world. 6000 articles, 26 million words and 50,000 images make Wikipedia for Schools a rich and safe resource for teaching, learning, and research.

World Map

World Map

Browse the world from the global to the local with this interactive and searchable world map from OpenStreetMaps and the XSCE project.

Khan Academy

Khan Academy

Over 2000 videos on math and science, from the basic to the advanced. All Khan Academy content is available for free at www.khanacademy.org.

College Credit Courses

MIT College Credit Courses

This is a collection of courses that can help you earn college credits in a variety of topics. The courses are gathered from a variety of Open Educational Resources, and reorganized by World Possible, the team that maintains RACHEL.

College credits are granted through CLEP exams. The College Board's College-Level Examination Program (CLEP) has been the most widely trusted credit-by-examination program for over 40 years, accepted by 2,900 colleges and universities and administered in more than 1,800 test centers, including in many prison facilities.

Saylor Academy Textbooks

Saylor Academy Textbooks

Over 100 Free Textbooks covering a wide range of topics that can help with earning college credits.

MedlinePlus

MedlinePlus Medical Encyclopedia

More than 4,000 cross-referenced medical articles from the U.S. National Library of Medicine and the National Institutes of Health. Includes comprehensive illustrations and photographs.

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These materials do not provide medical advice and are for informational purposes only. This content is not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read here.

Khan Academy Health

Khan Academy Health & Medicine

Nearly 200 videos on health topics, covering the workings of major body systems and the diseases that affect them. All Khan Academy content is available for free at www.khanacademy.org.

These materials do not provide medical advice and are for informational purposes only. This content is not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read here.

Great Books of the World

Great Books of the World

A searchable, categorized selection of over 400 of the most beloved and respected books from around the world, collected from Project Gutenberg.

infonet-biovision

Infonet-Biovision

Well organized and illustrated information on a wide range of agricultural, environmental, and health topics.

The Organic Farmer - Magazine

Over 80 printable magazines on farming from Kenya. Used by over 60,000 farmers for guidance and practical tips on securing and increasing their harvests through simple, environmentally friendly means.

Medical Information

Medical Information

Various Medical Documents

These materials do not provide medical advice and are for informational purposes only. This content is not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read here.

Hesperian

Hesperian Health Guides

Easy to understand, practical, accurate, and heavily illustrated guides on health topics that for remote areas where access to medical personnel and facilities is limited.

These materials do not provide medical advice and are for informational purposes only. This content is not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read here.

Practical Action

Practical Action

Practical Action has been using appropriate technology to help people in the developing world for more than four decades. The focus is on helping local people do what they already do even better. Here you will find broad knowledge bank of technologies that you can replicate.

Math Expression

Math Expression

Math tutoring materials including videos, study tips, practice questions and step-by-step solutions.

For each lesson, read the study tips carefully and take note of the important concepts/ideas before watching the video. These tips will guide you in your math thinking strategies.

CK-12 Textbooks

CK-12 Textbooks

High quality textbooks on STEM (Science, Technology, Engineering and Math) from ck12.org.

UNESCO's IICBA Electronic Library

UNESCO's IICBA Electronic Library

Teachers' resources from the UNESCO International Institute for Capacity Building in Africa.

Boundless

Boundless Textbooks

An amazing collection of searchable textbooks on a variety of advanced subjects, including extensive linked definitions of terms.

openstax Textbooks

A selection of post secondary textbooks for openstax (openstax.org)

PhET

PhET

PhET Interactive Simulations, a project at the University of Colorado Boulder, is a non-profit[1] open educational resource (OER) project founded in 2002 by Nobel Laureate Carl Wieman. PhET began with Wiemans vision to improve the way science is taught and learned. Their stated mission is "To advance science and math literacy and education worldwide through free interactive simulations."

Peacebuilding Resources

This collection of articles, guides, and videos on building peace is a valuable resource for addressing issues that arise in conflict zones.

Music Theory

Music Theory

Comprehensive music theory lessons and exercises to begin your journey into the realm of music.

Understanding Algebra

Understanding Algebra

A complere, concise, and illustrated textbook introducing algebra that can be viewed here or printed out.