Some reasons why simple ideas in projective geometry should have a place in the elementary school curriculum are suggested. Then, seven lessons on projective geometry that were taught to a class of 10-year-olds are described. (MNS)

Suggested is a format for sequencing instructional activities during the typical elementary school mathematics period to elicit better teaching and more learning. To illustrate each component of the format, a lesson on fractions appropriate for fourth or fifth grade is outlined. (CW)

Introductory and follow-up activities with Iggies, a tool for teaching and reinforcing the ability to discern likenesses and differences, are given. Two lessons for kindergartners are detailed, and some suggestions for other uses of Iggies are noted. (MNS)

Presented are worksheets designed to provide experience in identifying, discriminating, and drawing geometric shapes; introduce area approximation or irregularly shaped figures; provide practice in estimating and determining areas of irregular plane regions; and provide experiences in making tile designs. (MP)

A teaching sequence for the division algorithm is detailed. (MP)

Manipulative materials designed to instruct pupils on fractions are presented. The use of unit holders in teaching fundamental concepts of fractions and equivalent fractions are reviewed. (MP)

Activities are presented to give students a picture of decimal concepts of tenths and hundredths. Three models (linear, regional, and value) are described, followed by four activities. (MNS)

A plan used successfully in the classroom to introduce pupils in grades one through six to calculators is outlined. It comprises a sequence of activities designed to help teachers have a good start when they take the first steps introducing calculators to students. (MP)

A suggested outline for a typical week's routine in drilling students is provided. A variety of material is suggested including flash cards, slides, games, and audio tapes. (MP)

The purposes, materials, and roles of teachers and students in developmental and practice lessons are contrasted. Two lessons designed to help students acquire understanding of geometric figures and of place value and two games for each are included. (MNS)

To develop students' abilities to reason with mathematics and apply mathematics to problem solving are abetted by building on their personal experiences, integrating the curricula, and designing learning activities that require students to write or speak about mathematics. Using an integrated approach is discussed and examples are included. (MNS)

Five different triangle shapes cut from poster board or construction paper provide the springboard for student activities and discussions of a variety of geometric concepts from kindergarten to grade 8. (MP)

Presents 5 activities for the K-1, 2-3, 4-5, 6-8 grade levels and for in the home in which students explore the concept of combinations. Each activity includes a lesson plan to investigate a combinatorics problem appropriate for that grade level. Provides reproducible worksheets. (MDH)

Presents activities taken from the National Council of Teachers of Mathematics Addendum Series, grades 5-8, involving data collection and chance. Students determine whether a game is fair based on the data collected and examine rule changes to ensure fairness. (MDH)

Describes an eight-day graphing unit for grades four through six using data collected from a local cemetery. Provides the activities of each day and excerpts of discussions taking place during the lessons. Concludes that working with real data helps students construct meaningful graphs. (MDH)