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Remote Ready Biology Learning Activities has 50 remote-ready activities, which work for either your classroom or remote teaching.
Space
Of course I've always known that the universe was big, however after we discussed it in class this week I realized how big it was, and it was very overwhelming.
However I also thought it was strange when we talked about how the Universe has a diameter of 10-15 billion light years. I always thought that the universe was never ending...but this came as a bit of a shock to me. How could the universe have a limit? I always depended on it being never ending-that’s what the Universe means to me whenever I think about it. So to think of the Universe as having a limit is sort of contradictory to what I know.