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Instructions
Measure the circumference of your tulip bulb. Wrap a string around the widest section of the bulb (or use a measuring tape.) Place the string on a ruler. Find your bulb's circumference in millimeters. On this graph, plot the circumference of each bulb in your class.

Observations and Predictions

  1. My bulb's circumference is ________________.
  2. In our class, there are _____ bulbs larger than my bulb and _____ bulbs smaller than mine.
  3. Here's when I predict my bulb will emerge and bloom compared to classmates' bulbs (Give reasons for your prediction):


  4. Here's how I predict my bulb will grow compared to classmates' bulbs (Give reasons for your prediction):