Learn science using videos, articles, and TEKS-aligned practice exercises. Review the fundamentals of matter and energy, forces and motion, Earth's systems and processes, living …

Explore advanced computer science topics from algorithms (how we solve common computing problems and measure our solutions' efficiency), to cryptography (how we protect secret …

Learn AP Computer Science Principles using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of digital data representation, computer …

We've partnered with Dartmouth college professors Tom Cormen and Devin Balkcom to teach introductory computer science algorithms, including searching, sorting, recursion, and graph …

Intro to programming Drawing basics Coloring Variables Animation basics Interactive programs Becoming a community coder Bonus: Resizing with variables Text and strings

Spider Bot Bit-zee Bot Unit 8: Lego robotics Introduction Light guitar Coin detector Ant bot Programming basics Unit 9: Reverse engineering Household items Hair dryer DVD player …

This unit is part of the Biology archive. Browse videos and articles by topic. For our most up-to-date, mastery-enabled courses, check out [High School Biology] …

Basics of hydrocarbons Learn Homologous series Nomenclature of simple carbon compounds

Understand the basic principles of different kinds of chromatography: paper, thin layer, column, size-exclusion, ion exchange, affinity, and HPLC. Created by Angela Guerrero.

A summary of the math and science preparation that will help you have the best experience with electrical engineering taught on Khan Academy. Become familiar with engineering numbers …