Compares one study in which 5-year-olds and another in which adults quantified random patterns of dots under unlimited exposure duration. Data on operating ranges and rates for subitizing and counting are included. (JMB)

Five activities are presented in this student workbook on using the electronic calculator. Following the directions for using the machine, problems are given on multiplying and dividing, finding percentages, calculating the area of assorted polygons, changing fractions to decimals, and finding squares and square roots. (JH)

Students in three mathematics classes were assessed on two aptitudes, field independence and general reasoning, and randomly assigned to either an expository or a discovery treatment. The expository treatment used a deductive sequence of instruction and provided maximal guidance for the students. The discovery group used an inductive sequence with…

This guide contains basic information to meet specific standards for pesticide applicators. The text is concerned with the calibration of dry and liquid pesticide systems for aerial application. Additionally, dispersal equipment is discussed with considerations for environmental and safety factors. (CS)

Answers and examples are given to sixteen questions related to traditional ways of performing the operations of arithmetic. (MP)

Illustrated is the use of pocket calculators for solving the Francis formula for rectangular, triangular, and V-notched weirs. (CS)

A discussion of the check of nines for the four arithmetic operations is given along with an explanation of why it works. (MP)

The calculator is used to determine the formula for computing annual yield from a savings account. (MP)

Describes a new idea in finger-counting developed by 31 year old Hang Young Pai, a Korean teacher living in New York. It is called Chisanbop and it comes from a more advanced hand-calculation system used in the Orient in conjunction with the abacus. It is applicable for both elementary students and for more advanced mathematical applications, such…

A method is given for obtaining a fairly accurate table of common logarithms, elementary arithmetic, and linear interpolation. The author recommends the use of a calculator. (Author/MN)

Illustrations are provided which show how some algebraic manipulations done prior to doing calculations can eliminate unnecessary storage of data, reduce the total number of needed steps, and avoid overflow. (MN)

Teacher planning procedures employing percentage-based measurement summaries and subsequent implementation of the results of planning with and without error analysis resulted in moderate increases in correct mathematics computation of learning disabled 10-13 year olds. No significant differences were found for presence or absence of error…

Assessment of effects of school principal involvement on acquisition of multiplication facts by 309 intermediate grade students found that taking the timed test three times per week resulted in consistent sustained gains and that a math game with the principal contingent on improved class performance was the most effective principal-initiated…

Discussed is the need to rethink computation in terms of what is critical, how computation is taught, and what constitutes computation. (MNS)

The mathematics associated with division is discussed, working from a theorem for the real division algorithm. Real-world, geometric, and algebraic approaches are discussed, as are related topics. (MNS)