Vectors in Pictures is the eleventh book in the series, introducing vectors, and looking at free vectors, parallel vectors and a test for collinear points. Combining vectors, and applying the commutative & distributive laws. Calculating magnitude and direction, and resultant vectors. Working with the unit base vectors. Finding a fraction of a vector and dividing a vector in a given ratio. Working out the position vector of a point dividing a line in a given ratio, and finally applying the vectors laws in similar triangles. Review questions are at the end of each section.

The review questions require iOS 10 or higher.