This study focuses on the mental processes used during estimation. This research: (1) developed an operational definition of estimation; (2) created an instrument to identify exceptionally good estimators; (3) collected performance level data on 1187 subjects; (4) constructed interview problems and developed protocols to identify the thinking…

Refinements of work with calculator algorithms previously conducted by the author are reported. Work with "chaining" and the doing/undoing property in addition and subtraction was tested with 24 third-grade students. Results indicated the need for further instruction with both ideas. Students were able to manipulate the calculator keyboard, but…

This booklet contains a brief introduction to the use of the metric system. Topics covered include: (1) what is the metric system; (2) how to think metric; (3) some advantages of the metric system; (4) basics of the metric system; (5) how to measure length, area, volume, mass and temperature the metric way; (6) some simple calculations using…

THE READABILITY OF ANY BOOK IS DETERMINED BY WORDS AND SENTENCES WHICH ARE USED AND WHICH VARY IN DIFFICULTY FROM EASY TO HARD. PRESENTED HERE IS A PROCEDURE BY WHICH TEACHERS CAN DETERMINE THE READABILITY INDEX OF ANY BOOK AND TRANSLATE THE INDEX TO GRADE LEVELS. THE METHODS EMPLOYED IN THE DEVELOPMENT OF READABILITY FORMULAS AND WORD LISTS ARE…

This report presents the results of a teaching experiment which investigated (1) the role of mathematical experiences on the development of counting, addition, subtraction, mental arithmetic, classification, and other arithmetical topics and (2) the role of quantitative comparisons and class inclusion as readiness variables for learning the…

The purpose of this study was to compare the effects of a fourth-grade arithmetic sequence based on calculator flow-charting with those of traditional textbook instruction. Both achievement and attitude were compared. Students were matched on the basis of intelligence (Otis Quick-Scoring Mental Ability Beta Test Form EM) and sex, and then randomly…

Designed for the student who has acquired basic computational skills with non-negative rational numbers, this guidebook delineates minimum course content to further develop students' computational skills with whole numbers. Place value and estimation are also covered. General goals, performance objectives, a course outline, suggested teaching…

A teacher describes a banking unit used in a sixth-grade mathematics class. Students learned the value of money by receiving a pretend paycheck for their chosen occupation and paying weekly, monthly, and annual bills. (MP)

Examples from almanacs are used to provide real-life problems that involve estimating, computing, and thinking. (MP)

These worksheets deal with sums of numbers. Students are asked to find the relationship between the last number in the series, the number of addends, and the sum. (MP)

Describes the intuitive approach used in general chemistry and points out its pedagogical advantages. Explains how to extend it to acid-base equilibrium calculations without the need to introduce additional sophisticated concepts. (GA)

Recent evidence suggests that traditional cost analysis may not be the most appropriate way to justify educational budgets. This article suggests that using constructed cost models to develop operating budget requests can help ensure that the distinction between legitimate information needs and managerial autonomy is maintained. (LBH)

Projects that involve counting real things either from 1 to 100 or from 1 to 1000 are presented. The projects encourage children's guessing, ordering numbers, recording results in a variety of ways, counting elements of a subset as well as the entire set, and some problem solving. (MN)

The technique of organizing data in tables to solve counting problems in geometry is illustrated in the solution of five problems. (MN)

Describes a hand held calculator exercise for computing the Rydberg Constant accurately. (SL)