A description is given of a game used to give a continuous review of multiplication facts and illustrate certain properties. (MP)

An alternative approach is described for presenting the idea of the derivative through the use of chords of a graph. (MP)

Repeatedly taking the square root with a calculator yields numbers with logarithmic-type properties, which can be used to define the logarithm functions. (MP)

A paper staircase drawn on a grid forms the basis for a discovery lesson in algebra. (DT)

Short units for general mathematics students are described; sample worksheets are included. (DT)

A series of lessons concerning money and place value is described and instructional techniques are analyzed. (DT)

Ways in which elementary children can learn the concept of "zero" are described. (DT)

Painting a cube, breaking it into smaller cubes, and finding how each of the smaller cubes is painted are used as the basis for a geometry activity. (DT)

Classroom activities related to athletics can be used in teaching statistical concepts. Here the correlation of seeding and placing in a tennis tournament is developed. (SD)

A square lattice is used to generate classroom activities, such as counting the number of squares in a lattice of a given size. (MP)

Activities growing out of a study of Euler's formula are described. (SD)

The action in a British sporting event (bumping races) was used to motivate a simple method of computing the correlation between starting and finishing positions. The method is generalized to other situations. (SD)

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

An argument is given for providing children with visual images for number concepts that they can internalize and which can aid understanding of numbers and their relations. (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)