Education
Get flash to fully experience Pearltrees
Khan Academy
Matrices, vectors, vector spaces, transformations. Covers all topics in a first year college linear algebra course. This is an advanced course normally taken by science or engineering majors after taking at least two semesters of calculus (although calculus really isn't a prereq) so don't confuse this with regular high school algebra.English Grammar Errors: GrammarErrors.com
The purpose of this site is to draw attention to the many English language blunders that are made by native speakers, to shed light on why these words and expressions are considered errors, and to help others avoid common grammar mistakes in speech and writing.
Brainz — Learn something new today.
Adele Laurie Blue Adkins, better known as Adele, is an English recording artist and song writer. The self proclaimed "heartbroken soul" singer was born on May 5, 1988 in Tottenham, London, England, and was raised by her single mother who worked as a masseuse and made furniture. Adele's father...
Free Online Course Materials | MIT OpenCourseWare
An inspiring trip to Haiti and publishing educational materials that matter: read about it in the newest letter from executive director Cecilia d'Oliveira.
(The above picture of the periodic system is interactive - no need to download, just click on an element. For schools and universities please tell chemistry students, teachers and professors to feel free to reference with citation and link for educational purposes)
Periodic table - chart of all chemical elements
The Institute for Advanced Study of Human Sexuality (IASHS) is the longest standing graduate program in Human Sexuality with the largest resource library in the world.
The Institute for Advanced Study of Human Sexuality
Yenka's design tools let you test your electronic projects, and PIC or PICAXE programs, and produce 3D PCB layouts for classroom manufacture.
Yenka.com
Nearly one thousand students pack Harvard’s historic Sanders Theatre to hear Michael Sandel talk about justice, equality, democracy, and citizenship. Now it’s your turn to take the same journey in moral reflection that has captivated more than 15,000 students, as Harvard opens its classroom to the world.
Justice with Michael Sandel - Home
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