Suggestions are given for activities to use to introduce common and decimal fractions. Models are used initially and symbols are introduced slowly. Decimals are related to common fractions. (MP)

This discussion of cyclic patterns that appear in repeating decimals includes the use of the calculator in discovering the patterns. (MP)

An array model is discussed as an alternative approach to reviewing the four basic operations with fractions; it could help motivate students. (MP)

Three topics related to teaching mathematics are discussed: a problem with the order of operations, teaching fractions, and an application of the distributive property. (MP)

Four activities concerning addition and subtraction are described. They range in appropriate grade level from K-2 (crossing out objects) to 6-8 (solving decimal inequalities). Masters for worksheets are provided. (SD)

Grid paper activities are discussed as a way to help students conceptualize fractions. (MP)

A method of using a diagram to investigate properties of fractions is described. (DT)

A proof is given of the irrationality of the square root of 2 which depends on notions of terminating and repeating decimals. (MP)

An account is given of the use of the calculator and Cuisenaire rods in examining decimals that result from the division of whole numbers. (MP)

This method of teaching the division of fractions emphasizes the use of concrete materials and helps students understand what division of fractions means. (MP)

This discussion of the mathematical potential of classroom events gives many examples of incidents that can be used for learning about topics such as one-to-one correspondence, counting, sets, ordering, time, fractions, money, shape, estimation, measuring, volume, area, number operations, and graphs. (MP)

Many activities are described for teaching two fundamental concepts concerning one-half. These concepts are one-half of a number and one-half of the size. (JT)

Paper folding and coloring activities are presented which involve the use of rectangular and square regions as models for basic fraction concepts. Rules for a fraction game also are included. (DT)

A program in BASIC which decomposes fractions is provided. Activities related to student use of the program are listed. (SD)

A sequence of seven activities in which metersticks and string are used to measure objects is described. Using this graded series of exercises, decimals less than one can be introduced in a natural way. (SD)