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Water Lilies

Watch out! There’s an explosion of water lilies in the pond!

In the summer, the number of water lilies in the pond doubles every day. When will the pond be entirely covered? Think long and hard; this puzzle can be tricky!

Dip your toe in the water; this puzzle is sure to be interesting! It’s up to you to find the solution! Hint: exponential functions may come in handy…

  • This puzzle is perfect for introducing exponential functions. Your students will be able to observe how a small initial variation affects an exponential function. This puzzle can also be solved using logic.

  • Planning notes