Chlamydomonas reinhardtii is a eukaryotic unicellular, green alga. It is found in freshwater and moist soil environments. Chlamydomonas sp. are biflagellated and undergo a haplontic life cycle characteristic of many algal protists. Chlamydomonas has been used extensively as a research system in cell biology and genetics. It can also be readily incorporated into an undergraduate teaching curriculum. There are several exercises that undergraduates can successfully carry out using Chlamydomonas at each level of study. We will demonstrate this by carrying out two protocols. One protocol will involve matings between Chlamydomonas cells of opposite mating type and the other will explore Chlamydomonas phototaxis. Students find each of these protocols to be both educational and exciting.