Gordon Penrose
Gordon Penrose is a Canadian scientist, educator, and author of children's science books. His works have been featured in OWL magazine and ChickaDEE magazine, and he played the role of Dr. Zed for the children's television show OWL/TV.
Penrose's philosophy is based on interactive science experiments on the belief that children learn best by doing. Consequently, his books describe experiments that require as little adult supervision as possible. Penrose's audience is eight- to twelve-year olds, who are in Piaget's "concrete operations" stage, where abstract thinking about hypotheticals is not yet fully developed.