I ALWAYS start the year with the Metric Olympics lab. Why not begin on day one with some friendly competition? Students are normally shocked to actually DO a lab on day one, and I think it perfectly sets the tone for the rest of the school year. Students remember this lab years later…and some even keep their gold medals! I take a digital picture of the gold medal “winners” each class and then post the pictures out in the hallway all year long. It’s a favorite lab for both the students and for me. It’s a great way to “remind” them about the metric system and metric conversions after a long summer break!