HEATKEYS

Online reference and resources - web development, software programming, electrical formulas.

Online scientific calculator without ads. Creates a list of calculations that can be printed, bookmarked and shared. Keys: pi, e, sin, cos, tan, asin, acos, atan, deg, rad, exp, ln, log, mod, fact, rand, dice, ans and more.

Free Online Scientific Notation Calculator. Solve advanced problems in Physics, Mathematics and Engineering. Math Expression Renderer, Plots, Unit Converter, Equation Solver, Complex Numbers, Calculation History.

Electrical Engineering Community for hardware designers with design tools, projects, articles, jobs, events, discussions, and social networking.

The Khan Academy is a not-for-profit 501(c)(3) with the mission of providing a world-class education to anyone, anywhere. Despite being the work of one man, Salman Khan, this 1600+ video library is the most-used educational video resource as measure...

High school level mathematics and computer programming lessons, activities and resources that are fun and challenging. Materials for students, parents and teachers.

Purplemath contains practical algebra lessons demonstrating useful techniques and pointing out common errors. Lessons are written with the struggling student in mind, and stress the practicalites over the technicalities. Links and other resources als...

Online advanced virtual calculators for math and statistics. Also features two Abacuses: Soroban and Suan Pan and units of measure conversion tools.

The Department of Chemistry at Texas A&M University is one of the largest chemistry research and educational programs in the country, located in College Station, Texas.

٩(•̮̮̃•̃)۶ Online calculator for derivatives and partial derivatives of arbitrary functions with a user-friendly interface.

YouTube is a place to discover, watch, upload and share videos.