Maths: Age 15

7 illustrated Maths lessons for Age 15.

Adding two vectors by drawing To add two vectors, draw the second one starting at the tip of the first, then draw an arrow from the very sta…
Arrows End to End Two arrows can be joined by placing the second arrow's tail at the first arrow's tip. The arrow from the first…
Collinear vectors Two vectors are collinear when one is a real multiple of the other. This means their points lie on one straigh…
Curve Inputs and Outputs A function matches every input value with exactly one output value. On a curve, you move from an input on the …
Arrows and Aligned Dots Two vectors can have the same direction or opposite direction, with one length a real multiple of the other. T…
Straight Line on Axes A straight line crosses a grid with a vertical and a horizontal axis. Its steepness and where it cuts the axes…
The U-Shaped Curve of Squaring When you square every input, the results never drop below zero, so the graph falls to a lowest point and then …