2D and 3D vectors

What you'll learn

1. 1

   Think of a 2D vector as an arrow on a flat grid — it tells you how far to go right/left and up/down. A 3D vector adds a 'depth' arrow, like a drone flying in 3D space.

2. 2

   How many numbers do you need to describe a 2D vector?

3. 3

   Here's a 2D vector (3, 2) on a grid — it goes 3 steps right, 2 steps up.

4. 4

   Let's add two 2D vectors: (2, 3) + (1, 4)

5. 5

   Drag the arrow to show the vector (4, 1) on the grid.

6. 6

   What is (1, 2) + (3, 0)?

7. 7

   Now try a 3D vector: (1, 2, 3) + (2, 0, 1)

8. 8

   What is (0, 1, 2) + (3, 0, 1)?