B. brought some Orbeez to school. I asked if we could add water and watch them grow. "They don't grow," he said. We put them under the document camera and drew around the orbeez on the screen, then watched throughout the morning to see if they orbeez got bigger. B. was not convinced they had got bigger. He said that the camera had magnified them. Observation, experimentation, sharing thoughts. More experimentation is needed.