Adler, Irving

The story of the nail is also the story of iron ore, coke and modern houses. Describes the past and present uses and designs of nails, and how men have learned to make them inexpensively.

The story of the nail is also the story of iron ore, coke and modern houses. Describes the past and present uses and designs of nails, and how men have learned to make them inexpensively.

A simple explanation of what shadows are, how and when they exist, and what they tell us about the size and shape of objects around us.

All about sets--what they are and how we use them. Discusses subsets, universal sets, intersection of sets and many other topics. Contains exercises and provides answers to them.

Explains the meaning of integers and discusses their uses. Includes directions for making a slide rule and a simple adding machine.

A discussion of various sensations felt by the human body and the organs which are used to perceive them.