Hi. I am so excited about the CEL module for first grade. I had and amazing time with lesson two. Initially students responded to lesson one and we created a list of what describes something that is alive. They gave examples like, it moves, it grows, it eats, it has babies, etc. In this lesson, a few days later when our shrimp were alive, I asked them to discuss some of their descriptions. When we discussed things that are alive move, I showed a video clip of a car speeding down the road. I said "Wow, it's moving, it must be alive!" They said, "Yeah, oh wait, no it's not." Then I showed a clip of an icicle getting larger and said "Oh it's growing, it's alive." Again they were ready to agree then told me reasons why the icicle wasn't alive. I was really pleased with my students and how they just took over the discussion. Having the shrimp swimming around and comparing it to the other jars of mystery substance, we went on to have a great observation and the students were able to compare the two jars. They definitely got the big idea.