Arthur really wants to find out what's inside. Discuss with children how you can sometimes use your hands, your ears, and even your nose to tell what's hidden inside something. Display the collection of small items. Tell children that you are going to place one object in a sock.
Children pass the sock around, feel the object, and try to guess what it is.
Display a smaller collection of school items. Tell children that you are going to put one object inside a box and pass it around. Children shake the box, listen to the sound, and try to guess what's inside.