Our eyes can not see all the colors of the rainbow. He showed us about natural sources of light. Dr. Roberts showed us a laser. He pointed it at the wall. Dr. Roberts said it could blow up something.
Lasers can also melt things.
The class really enjoyed having Mr. Roberts. A hissing cockroach escaped in Mrs. Lockhart's second grade classroom. It al began on October 11 when Dr. Meyer, Entomology professor at NCSU, came to the two second grade classrooms at Olds. Dr. Meyer brought lots of insects to teach the life cycles of the insect. Students held pupas, eggs, tobacco worms, and hissing cockroaches.