Vectors and the Geometry of R2 and R3

Defining a plane in R3 with a point and normal vector

Vectors in R² and R³
This video covers the basics of 2 and 3 dimensional vector spaces.

An Introduction to the Dot Product

Try out our new and fun Fraction Concoction Game.

Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.

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