Conductors and Insulators
Students investigate conductors and insulators and the types of materials that can be classiﬁed in each group. First, they use a simple circuit to distinguish materials that act as conductors and insulators. Then students use an “energy ball” to show that the human body can act as a conductor.
Learn by Reading
For additional content-area reading, check out the Houghton Mifflin Science eBook: Grade 4, Unit F, pages F54–F55.