This lab activity (done in groups of 3-4) develops Pascal's triangle using two different color chips. I usually use checkers but any sort of chips (even poker chips) will do. Students determine color arrangements with 1, 2, 3, etc disks. These pages are set up for "red" and "not red" but can easily be adapted to the chips you have. Students will determine the pattern and then complete Pascal's triangle. This is a good discovery lesson, especially for the end of the semester if teaching this with sequences & series. It is also a good review for Calculus students so they remember the triangle and how to use it.