Grade 4-7-These books move beyond basic introductory texts and provide questions as well as answers to some of the complex aspects of each of these topics. An explanation of a concept is followed by at least one simple experiment or demonstration (usually no more than four or five steps). Needed supplies (inexpensive household objects) are noted in a boxed sidebar with a description of what principles are at work. Photographs illustrate each step. In the first book, Farndon defines color; points out that ours is a three-color world; and discusses mixing, changing, contrasting, and shimmering colors. Activities include how to make a spectrum, how to mix colored light, and how to create a color wheel. In the next book, the author turns his attention to electricity, discussing charges, circuits, conductors, and insulators.
