Khan Academy: Css Specificity Rules

Video lesson using l'Hopital's rule to find the limit of a function containing trigonometric functions. Includes link to additional practice at the top of the video. [7:42]

Video lesson finding the limit of a rational function using l'Hopital's rule and also by factoring. Includes link to additional practice at the top of the video. [5:15]

Video lesson using l'Hopital's rule to find the limit of a function containing a natural logarithm term. Includes link to additional practice at the top of the video. [7:50]

Video defining the addition rule for probability, including finding the probability of mutually exclusive events. [10:43]

A walkthrough of CSSZengarden.com, which shows just how much you can change with CSS. Keep going with CSS on Khan Academy!

Part 4 of derivatives. Introduction to the chain rule.

A video lesson presenting the Rule of Sarrus for finding the determinants of 3 x 3 matrices. The rule is derived algebraically and then used in a concrete example to find the determinant of a given 3 x 3 matrix. [7:18]

A brief look at how Google Maps uses CSS position and z-index properties to layout the map controls and overlays.

More Empirical Rule and Z-score practice.

This video, from Khan Academy, explains addition rule of probability for both dependent and independent events by solving an example (using Venn diagrams).