When you say "fist to five check" students rate their understanding by holding up the appropriate number of fingers. The goal is for everyone to be in the green. Great way for students to self-assess their understanding and help you to gauge student understanding.
ksc The Doctor: One problem at a time. There's forcefield technology inside this box. If I can enhance the signal I could extend it all over Stonehenge. Could buy us half an hour.// Amy: What good is half an hour?// The Doctor: There are fruit flies that live on Hoppledom Six. They live for twenty minutes and they don't even mate for life. There's going to be a point to that. I'll get back to you. ♥♥