PreK - Kindergarten. Studies are one of the most effective ways for children to learn. These step-by-step guides help you develop studies about boxes, rocks, buildings, flowers, clothes and ants. They help you identify children's questions, organize and plan the events, facilitate investigations and involve families. Studies are meaningful to children because they provide opportunities to gain information through direct observation and experimentation and then to link new ideas to what they already know. Each Study Starter is available individually, or you may purchase the complete set to receive a free teacher's guide and full color binder to store the Study Starters and your notes.