As an aid to students of Russian, two general rules concerning numerals are suggested: rule of the genitive case and rule of the case of "enumerated object." These rules, together with five secondary rules and corresponding declension forms, define the numeral system. (Text is in Russian.) (SK)

Some pedagogical problems in Chinese numeration are described. They involve the teaching and learning of how to speak numerals with fluency in Chinese, using Hindu-Arabic written numbers. An alternative approach which stresses regularity is proposed. (MNS)

Tests for divisibility in bases 2 through 10 are presented. Two strategies used by a group of fourth-year students are described. (MNS)

Some background information and guidelines on computer generation of random numbers is presented. Sections concern ways of generating random numbers and descriptions of statistical tests. (MNS)

A divisibility test for the number 7 is analyzed, and the general method is considered for other numbers. (DT)

A puzzle concerning whole numbers is analyzed and extended to different number bases. (DT)

Plans are given for the construction of a "counting frame." This device consists of beads strung on a wire and used as a counting aid. (JP)

Modular arithmetic is used to find the frequency of Friday 13th's in any year. (MM)

A rationale is given for the Russian-peasant algorithm for multiplication indicating why it works as well as how it works. (DT)

A proof is given that for any four digit number, repeated reordering of digits and subtraction will evenutally result in the number 6174. A computer program is included. (DT)