Sunlight Hypothesis
"This morning we made an interesting discovery in our blooming garden," wrote Putney Central School teacher Karen Sanders.
Elias looked at a tulip that wasn't open yesterday, and said, "Cool, I can see the pistil and stamens in this tulip today!" Spencer noticed that the tulips that had been open yesterday afternoon were closed this morning. I asked them what might be different about the conditions in which they were growing. They decided that a shrub beside the closed tulips was shading them, and the open tulip was in the sun. So tulips need sunlight to open, they hypothesized. |