Ptable is an interactive periodic table of the elements showing names, electrons and oxidation states. It offers visualization of trends, 3D orbitals and isotopes, and allows users to mix compounds, with fully descriptive writeups.
The Pinouts Book is a free digital book for designers and engineers, serving as a quick reference for pinout functions in electronics projects. It covers 200 commonly used components, including connectors, single board computers, dev boards, memory cards and microcontroller chips. Pages link to official datasheets and specifications, and the latest version is reformatted for A4 printers.
BOINC Central is a volunteer computing service operated by the U.C. Berkeley BOINC project. It lets scientists in multiple areas access volunteer computing power without creating their own BOINC project. It currently supports any application packaged with Docker, and provides computing to independent researchers as well as those from academic institutions. Computer owners donate computing power to support computational research in multiple areas.
ScienceGeek.net is the website of Andy Allan, a retired science teacher in Visalia, California. It provides resources supporting high school science courses, including chemistry, AP Chemistry, and biology, such as notes, worksheets, labs, PowerPoints, and interactive review activities.
The Borr Project offers a pre-college mathematics curriculum built from online materials, covering topics such as calculus, discrete mathematics, linear algebra and probability. Courses are chosen to match the 2015 CUPM Guide and be open for enrollment. The curriculum can be completed in about two years with roughly 18-22 hours per week, and students may work alone or in groups.
CEMC Courseware is a free online collection of mathematics and computer science materials from the University of Waterloo's CEMC. It offers lessons, interactive activities, enrichment challenges and practice with immediate feedback, covering Grades 4 to 12. No registration is required. The page states that no certificate or credential is awarded and that personal progress cannot be tracked.
MadAsMaths is a mathematics resources site offering free materials for students and teachers. It provides mathematical booklets classified by topic with questions and full solutions, practice papers with solutions, and Project Maths PowerPoint presentations. The site is static with no further updates and its contact form deactivated.
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The Pinouts Book is a free digital book for designers and engineers, serving as a quick reference for pinout functions in electronics projects. It covers 200 commonly used components, including connectors, single board computers, dev boards, memory cards and microcontroller chips. Pages link to official datasheets and specifications, and the latest version is reformatted for A4 printers.
BOINC Central is a volunteer computing service operated by the U.C. Berkeley BOINC project. It lets scientists in multiple areas access volunteer computing power without creating their own BOINC project. It currently supports any application packaged with Docker, and provides computing to independent researchers as well as those from academic institutions. Computer owners donate computing power to support computational research in multiple areas.
ScienceGeek.net is the website of Andy Allan, a retired science teacher in Visalia, California. It provides resources supporting high school science courses, including chemistry, AP Chemistry, and biology, such as notes, worksheets, labs, PowerPoints, and interactive review activities.
The Borr Project offers a pre-college mathematics curriculum built from online materials, covering topics such as calculus, discrete mathematics, linear algebra and probability. Courses are chosen to match the 2015 CUPM Guide and be open for enrollment. The curriculum can be completed in about two years with roughly 18-22 hours per week, and students may work alone or in groups.
CEMC Courseware is a free online collection of mathematics and computer science materials from the University of Waterloo's CEMC. It offers lessons, interactive activities, enrichment challenges and practice with immediate feedback, covering Grades 4 to 12. No registration is required. The page states that no certificate or credential is awarded and that personal progress cannot be tracked.
MadAsMaths is a mathematics resources site offering free materials for students and teachers. It provides mathematical booklets classified by topic with questions and full solutions, practice papers with solutions, and Project Maths PowerPoint presentations. The site is static with no further updates and its contact form deactivated.
