In this deck, you'll learn about vectors. A vector is a quantity that has both a size, or magnitude, and a direction. We'll cover how to write vectors, how to add, subtract, and multiply them, and how you can use them to solve geometry problems.

Think about giving someone directions. If you say 'walk 500 metres', you've given them a distance, but not a direction. That's a scalar quantity. If you say 'walk 500 metres north', you've given them both a distance and a direction. That's a vector. In maths, we often think of vectors as a journey or a displacement from one point to another.

One of the most common ways to write a vector is as a column vector. This looks like two numbers written one on top of the other, inside a pair of brackets. The top number tells you the movement in the horizontal, or x-direction. A positive number means right, and a negative number means left. The bottom number tells you the movement in the vertical, or y-direction. Positive means up, and negative means down.