Bulb Circumference

Instructions: Measure the circumference of your bulb. Wrap a flexible tape measure or a string (place the string on a ruler)  around the widest section of the bulb. Find your bulb's circumference in millimetres. On this graph, plot the circumference of each student's bulb.

Observations and Predictions

1. My bulb's circumference is _____________millimetres
2. In our class, there are _______ bulbs larger than my bulb and _______ bulbs smaller.
3. I predict my bulb will EMERGE on (date) ___________________________.
4. I predict by bulb will BLOOM on (date) ___________________________.
5. Compared to other bulbs in my class, her is how I predict my bulb will grow. (Give reasons for your predictions.)