Presented is a report on four 45-minute sessions with a group of 17-year-old students in Poland. Sessions were the first of a series organized with aim of exploring the possibilities of elaborating didactical situations that would help students overcome epistemological obstacles related to limits. Students' attitudes pertinent to the development…

Describes five learning activities for practice of number facts which will aid problems with computation in arithmetic instruction. Stresses importance of elementary students' ability to add, subtract, multiply, and divide, rather than rely on calculators and computers, for higher levels of math. (DST)

Two computer games, Guess and Rule, can be used to improve students' thinking strategies. BASIC and Logo programs are given for each game, and facts and additional references are included. (MNS)

Advocated is developing intuitive ideas of limits whenever the opportunity arises in elementary mathematics. Examples are given for geometry, fractions, sequences and series, areas, probability, graphing, and the golden section. (MNS)

The importance of using concrete materials to teach fractions is emphasized. Suggestions for preparing inexpensive sets of such materials are given, with nine activities for their use. (MNS)

Suggestions for using a computer disc containing unprotected programs are given. The Fibonacci sequence, prime factorization, sum puzzlers, and other examples are described. (MNS)

Calculator activities for grade 1 are presented. Included are introductory activities, such as keying and finding patterns, and skill lessons, with such topics as ordering number, greater than and less than, estimation, and problem solving included. (MNS)

A problem is discussed in which students investigate the properties of the perfect triangle. (MNS)

Abundant and deficient positive integers are investigated, with a computer program listed. (MNS)

License plates are used to give students experiences in solving problems, following directions, developing numeracy, and writing number sentences. Four activities for different levels are given on the four worksheets. (MNS)

Children used lunch milk cartons to form a cubic meter, then covered it with construction paper and drew squares to show that it contained one million cubic centimeters. (MNS)

A variety of activities and information about computers and programing are included. (MNS)

Compares the Genevan and Cattell-Horn theories of intelligence and describes both similarities and differences. Describes a study investigating the relation of the Piagetian operative level to the child's ability to use crystallized solution procedures (aids) in making elementary numerical comparisons. (HOD)

Possible stages in young children's use of the number line as an aid are described. The practice of using number lines in test items is discussed and criticized. Finally, the wider role of the number line diagrams in mathematics teaching is outlined. (MNS)

Three games in which the calculator plays an important facilitating role are presented. It promotes a "guess then adjust your guess" strategy. The games are described within the context of elementary, junior high, and secondary classrooms. (MNS)