How big is one coronavirus? How big is a micron? How well do these masks protect against the virus? What can you observe about the size of particles mentioned? Why are we wearing masks?
The activity: HowBigMicron.pdf
CCSS: 4.MD, 4.NBT, 5.NBT, 5.MD, 6.RP
For members we have an editable Word docx of the activity and solutions.