As always, I start each lesson by quizzing Gwendolyn on topics we have covered, either in the last class, or even further back in time. Today I thought it would be good to review what we have learned about the Solar System, so I started by asking Gwendolyn some questions. Let me say that Gwendolyn really knows the main planets in our Solar System. She is spot-on with their order from the Sun, and remembered perfectly that the only two planets without moons happen to be Mercury and Venus. Gwendolyn also remembered that the gas giants have large numbers of - identified -moons (around 50 or 60 for Jupiter and Saturn, some 10-30 for Neptune and Uranus). And we always have a giggle when we recall that Mars' moons are somewhat irregular in shape, and are often likened to potatoes. We watched a short NASA documentary on the planets, and at every moment I could, I paused the video to ask Gwendolyn questions to make her think about what was being said. As always, I got the feeling that Gwendolyn was truly engaged in our class.