Third grade scientists are working in pairs to answer some of those questions. They figured out which materials they need to use. They described the set up and wrote the directions so that any other scientist would be able to repeat the investigation.
Finally, they are giving it a try. Third grade scientists are using many different size batteries, different kinds of wire, light bulbs, motors, and switches to answer their questions. They are collaborating to set up circuits, ask questions and observe. It's exciting work that will be continued on Monday.
Ask your third grader about their questions for an electrical investigation. :o)