# Science Portal Suggest a link jackmerrin@gmail.com

## General science sites

Google Scholar – Look up citations and papers

## Courses and OpenCourseWare

MIT OpenCourseWare – Links to lots of free course materials at MIT (100)

OpenCourseWare Consortium – Many OpenCourseWare sites linked into one (100)

OEDB – Open Education Database. You can search all the open courseware sites to find what you are looking for. Awesome! (100)

edX – Lots of opencourseware courses. (98)

https://www.coursera.org Lots of opencourseware courses for fee or free. (98)

Yale Open Courseware – Few good courses (95)

UC Irvine OpenCourseWare – Few good courses (95)

Carnegie Mellon Learning Initiative (95)

Udacity – Lots of technology based courses for several hundred to several thousand dollars. Nanodegrees.(94)

The Great Courses – DVD sets of some interesting courses. Usually not super advanced. Good if you can get them when they go on sale a few times a year. (93)

Udemy Lots of courses usually for a fee. Goes on sale sometimes for 10-20 bucks a course. (93)

## Physics Links

Physics Forums – Nice forum for physics and science (100)

Physics Stack Exchange – Questions and answers to any physics question (100)

Complete Irodov Physics Problems and Solutions – Nice solutions set (100)

Sixty Symbols – Physics and Astronomy Videos (99)

Ortvay Physics Contest – Hardest physics test on the planet. (96)

NIST Fundamental Constants – Fundamental constants of physics from CODATA and NIST (95)

US Physics Teams Exams – Several qualifying exams for the US physics team. (92)

Physics and Math Tutor – You can find some nice problems sets and information on tutoring in London. (90)

## Math Links

Art of Problem Solving – Where high school students go to prepare for Math Olympiads (100)

Numberphile – Lots of interesting Math topics (100)

Math Contest Collection – More than 20,000 mathematics contest problems and solutions (98)

Mathematics Stack Exchange – Answers to any type of math problem hard or easy (98)

Kahn Academy – About a thousand YouTube math videos at all levels (97)

The Calculus Lifesaver Video Course – 48 hour free video course on calculus. (96)

PatrickJMT.com – King of YouTube Math Videos (95)

Mathematical Association of America – Professional site for Mathematicians. Links to books and journals (94)

Paul’s Online Math Notes – Full Notes on Calculus 1,2,3, and differential equations (90)

Wolfram Math World – Great resource for formulas and Mathematica (94)

Math TV – Good math video site. (90)

Cool Math – Nice math site for kids (90)

The Primes Pages – Cool information about prime numbers (90)

S.O.S. math – Some notes on all types of math subjects (90)

Math Tutor DVD – Lots of tutoring videos is various math and science subjects (88)

## Chemistry Links

Chemistry Stack Exchange – Questions and answers in chemistry (100)

Periodic Table – Dyanmic periodic table look up properties of elements (100)

NIST Chemistry WebBook – Look up properties of many chemicals (100)

Named Reactions – Named chemical reactions with mechanism (99)

Periodic Videos – A video for each element in the periodic table (98)

Chemistry Olympiad Test – Past Local and US National Exams. (98)

ChemSpider – Chemical property and spectra lookup as well as articles and purchasing (96)

A.C.S. – American Chemical Society (95)

ChemGuide – Tutorials in different subjects of chemistry (94)

Chemtutor – Good for high school chemistry (93)

## Biology Links

Biology Stack Exchange – Questions and answers for biology (100)

USABO – Past USA Biology Olympiad questions and answers.(95)

## Problems and Solutions

GREPhysics.net – Solutions to the available GRE Subject tests (99)

All Science Olympiads – Good resource for all science Olympiads (99)

Chegg – Solutions for many textbooks (96)

Physics GRE Theory Notes – Good set of notes (95)