The rationale for teaching different number bases is discussed, and an approach for teaching the base 4 system is suggested. (DT)

Describes several activities to provide opportunity for the discovery of number patterns and shows the need for care in the descriptions of such patterns. (Author)

Worksheets provide activities with a modified number line and involve ordering numbers, number facts, and estimation. A suggestion for a bulletin board display is included. Two problem posters are also provided. (DT)

Chains made up of alternate arrows and numbers are used to represent the result of repeated applications of a function. A collection of problems based on these arrow chains is provided. (DT)

The experiences described here use the idea of movement along the number line to reinforce the student's concept of addition and subtraction of both whole numbers and fractions. Four student worksheets and teacher guides are included. (MM)

The author examines a well known number trick, in other number bases, and finds that equivalent results arise. (CT)

The study of number bases, facilitated by programing a microcomputer, helps students make mathematics discoveries. Several programs are given and discussed. (MNS)

The National Assessment of Educational Progress (NAEP) has completed its second mathematical assessment. This article focuses on the results from the second assessment of 9 year olds and 13 year olds; major results of the content areas are summarized and examples of the data are given to support the conclusions. (Author/MK) Aspect of National…

Noitcarf numbers provide a simulation activity that allows teachers or education students to gain an understanding of the feelings of students who are taught mathematics by a "rules" method. They are actually an abstract presentation of operations with fractions. (MK)