A collection of educational applets for visualizing concepts in math, physics and engineering, covering topics such as oscillations, acoustics, signal processing, electricity and magnetism and quantum mechanics. The applets were originally written in Java but have mostly been converted to JavaScript.
Outerzone is an archive that collects and shares plans of vintage and old-timer flying model airplanes for free. The site states it has 16,962 plans available for free download and does not require a login. It also notes it is currently dealing with a trademark dispute involving a similarly named site.
Stitz Zeager Open Source Mathematics provides free and open precalculus materials, including College Algebra, College Trigonometry and Precalculus textbooks by Carl Stitz and Jeff Zeager. A Precalculus 4i edition is available free on the interactive Ximera platform. Printed desk copies are offered to Verified Teachers through openintro.org.
Motion Mountain is a free physics textbook for students, teachers and others curious about motion in nature. The 2021 edition is offered as five PDF volumes, with an English original improved for over 20 years and volunteer translations in several languages.
ISciDAVis is an educational resource for documentaries, courses, books, reference material, or self-learning.
Macroinvertebrates.org is a taxonomy browsing site for aquatic macroinvertebrates. It presents insect orders, families and genera, including beetles, true flies, mayflies, dragonflies and stoneflies, with collection and taxa list views. It also provides an identification key, training materials, a practice quiz, a glossary and a PocketMacros app.
Jacobs Rocketry covers experimental rocketry focused on sugar propellant in PVC motor cases, along with selected high power rocketry topics. The site includes a store, rocketry basics, water rockets, links, and a free 1979 manual on homemade black powder rocket engines.
Community notes
Be the first to share how this project worked for you.
Sign in with a verified account to leave a review or join the discussion.
Sign in to reviewKeep exploring
Outerzone is an archive that collects and shares plans of vintage and old-timer flying model airplanes for free. The site states it has 16,962 plans available for free download and does not require a login. It also notes it is currently dealing with a trademark dispute involving a similarly named site.
Stitz Zeager Open Source Mathematics provides free and open precalculus materials, including College Algebra, College Trigonometry and Precalculus textbooks by Carl Stitz and Jeff Zeager. A Precalculus 4i edition is available free on the interactive Ximera platform. Printed desk copies are offered to Verified Teachers through openintro.org.
Motion Mountain is a free physics textbook for students, teachers and others curious about motion in nature. The 2021 edition is offered as five PDF volumes, with an English original improved for over 20 years and volunteer translations in several languages.
ISciDAVis is an educational resource for documentaries, courses, books, reference material, or self-learning.
Macroinvertebrates.org is a taxonomy browsing site for aquatic macroinvertebrates. It presents insect orders, families and genera, including beetles, true flies, mayflies, dragonflies and stoneflies, with collection and taxa list views. It also provides an identification key, training materials, a practice quiz, a glossary and a PocketMacros app.
Jacobs Rocketry covers experimental rocketry focused on sugar propellant in PVC motor cases, along with selected high power rocketry topics. The site includes a store, rocketry basics, water rockets, links, and a free 1979 manual on homemade black powder rocket engines.
