First, go to and complete the animation comparing the size of different objects to the size of cells.
Then, please use this flipgrid to record your response. You may use these questions to guide your video:
1. Were you surprised that cells are the size they are?
2. Is it surprising to see that cells are actually things, and there are different types?
3. What is your reaction to knowing that viruses, like coronavirus, are even smaller than cells, aren’t alive, and yet can cause so much alteration to our lives?