The Thorndike Arithmetics Book Two Author:Edward Lee Thorndike 1917. These books apply the principles discovered by the psychology of learning, by experimental education, and by the observation of successful school practice, to the teaching of arithmetic. Contents Part One: Common Fractions: Addition and Subtraction; Common Fractions: Multiplication and Division; Decimal Fractions; and The Four Operations w... more »ith Common Measures: Parts of 100: Problem Solving: Review. Part Two: Common Decimal Fractions; Problem Solving: Simple Accounts; Percentage; and Measuring and Comparing Quantities: Review.« less