Use this convenient table to compare Webb's Depth of Knowledge levels with Bloom's Cognitive Process Dimensions for Math and Science.

Interactive assessment (with multiple correct answers) which determines depth of knowledge in rational, natural, and integer numbers.

This site from Math Pages explains how to use Green's Theorem to find net area. It is very in-depth and mathematical, and would be very hard to understand without a prior knowledge of the subject.

This site from Math Pages contains relevant information regarding polynomials from Pascal's Triangle. The information is in-depth and a good knowledge of the subject is advised for better understanding.