Teachers may not need to teach children to ask questions, just develop that safe place where questions can be voiced, observe children to see the questions in their actions, and develop a culture that appreciates and records questions. An investigable question is rare in the preschool years but with questions so readily voiced, this is the time to begin making children aware of what they can and cannot answer through investigation. The objective of this month’s lesson is to introduce the idea of investigating a question and to investigate how much water is best for mung bean sprout growth through a fair test.