In the Exploratorium, campers choose from a wide variety of investigations and experiments. This week, some campers observed the absorbent properties of diapers. Many children made slime and lava lamps, while other children picked string beans from our vegetable garden. Some campers built scribble bots powered by batteries and a motor, and others figured out how to make bulbs light up using wire and batteries. A popular choice for campers of all ages was the opportunity to use an iPad to direct the movements of robot.