Vectors in 2D and 3D, dot product, cross product, unit vectors

A couple of presentations introducing vectors and unit vector notation. There is a strong focus on the dot and cross product and the meaning of these two products. The dot product is multiplication in multidimensional space when you are interested an parallel components. The cross product is multiplication in multidimensional space when you are interested an perpendicular components. By understand exactly what the dot and cross product are all about, students will more easily be able to correctly apply them and adapt to new situations.