Free Educational Videos for Students in K-12

Best educational videos to complement children’s learning. Instructional and ‘how to’ videos that explain concepts and help build essential skills. Find thousands of Khan academy videos, Lumos Learning videos along with many other interesting resources from top publishers. Recommend helpful videos to colleagues, friends, or students. Share feedback and submit reviews.


Ex: Find Function Output and Input Using a Graph, Table, Ordered Pairs, and Function Rule


By Mathispower4u

Ex: Find Function Output and Input Using a Graph, Table, Ordered Pairs, and Function Rule

Slope-intercept equation from two solutions example | Algebra I | Khan Academy


By Khan Academy

Find the equation of a line given two points, neither of which is the y-intercept. To do this, first find the slope, then you may either graph the line (as is done here), or plug in one of the points in for "x" and "y" into y = mx + b to solve for "b."

Double angle formula for cosine example | Trig identities and examples | Trigonometry | Khan Academy


By Khan Academy

Double angle formula for cosine example | Trig identities and examples | Trigonometry | Khan Academy

The Law of Cosines


By PatrickJMT

The Law of Cosines - In this video, I give the formula for the 'Law of Cosines' and do one 'applied' example. For more free math videos, visit http://PatrickJMT.com

Law of Sines


By maths486

This is a short video deriving the Law of Sines. GIven any triangle ABC, the following relation holds: a / sin A = b / sin B = c / sin C = 2r ( where r is the radius of the triangle's circumcircle ) Music: "Devote for Nature" by Noriyuki Iwadare ( Radiata Stories OST - Playstation 2 )

Confidence interval of difference of means | Probability and Statistics | Khan Academy


By Khan Academy

This video lecture series on Introduction to Statistics includes Average, Sample vs Population, Variance, Standard Deviation, Random Variables, Probability density functions, Binomial distribution, Poisson Process, Law of Large numbers and Normal Distribution......

Combinations - Counting Using Combinations


By PatrickJMT

A few numerical examples along with some word problems are shown where combinations are used to count the number of ways some event can occur.

Econ 340 Project: "Expected Values"


By Sovanny Im

Econ 340 Project: "Expected Values"

Parallel Lines, Constructions, Transformations, Integers Quiz


By G Scruton

Parallel Lines, Constructions, Transformations, Integers Quiz

Solve inequalities


By MathPlanetVideos

Solve the inequality -4(x+3)>24