After you have had a chance to view and discuss the initial set of videos with your students, you may wish to discuss the videos below. These videos provide additional examples to help reinforce the ideas. Some of the examples are less straight-forward than the examples in the first set. This enables students to consider the nuances in causal patterns in the real world and in science. After you've had the opportunity to discuss these examples with your students, you may want to look for other examples of different causal forms on-line. Teachers who have taught this approach have found many great examples of domino causality and other forms to share with their classes.