In this video segment, Gina explains her solution to Problem A2, including how she generated a rule for the number of toothpicks in each row of squares. Watch the segment after you have completed Problem A2. If you get stuck on the problem, the video segment may help you come up with a solution.
Does Gina's work involve a closed-form description or a recursive description for the number of toothpicks in each new row? Refer to Session 2, Part E for more information on these two kinds of descriptions.
You can find this segment on the session video, approximately 3 minutes and 9 seconds after the Annenberg Media logo.