# The Math of Covid-19 ### How simple math can help us stop the spread together!

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## Chapter 2: Fantastic Yeasts And How to Grow Them Let's video call the baker! Can you imagine something doubling every day? Exponential growth is different from linear growth. What's the defining property of linear growth? With exponential growth, the multiplication factor is fixed! We now have two quantities that appear to grow exponentially: the number of Covid patients, and the number of yeast. We'd better visit the Gardener understand the connection.