Explains what simple machines are and what they do; describes the scientific method; and includes experiments testing different simple machine concepts.
Introduces the study of the sense of taste and the steps in the scientific method and outlines simple experiments that demonstrate the basic principles of tasting and how scientists work.
Introduces the study of insects and the steps in the scientific method and outlines simple experiments that demonstrate the basic principles of insect life and how scientists work.
"Over 70 physics experiments are presented in five broad areas [with]...a discussion of the scientific theory behind the results....Really makes the experiments meaningful...easy to duplicate, they demonstrate the intended principles and encourage critical thinking. The author's style is lighthearted but clear."--School Library Journal.
Introduces the study of the life cycle and the steps in the scientific method and outlines simple experiments that demonstrate the lives of the bean, the caterpillar know as a wax worm, and the frog, and how scientists work.