This article gives a historical background, a discussion of the International Bureau of Weights and Measures, and an introduction to the International System of Units (SI). Base, derived, and supplemental units are discussed. Prefixes, matters of form, and possible adaption problems are also considered. (LS)

Five steps common to different problem solving models are listed. Next, seven specific abilities related to solving problems are discussed and examples given. Sample activities, appropriate to help in developing these specific abilities, are suggested. (LS)

The problem of finding the area of a regular polygon is presented as a good example of a mathematical discovery that leads to a significant generalization. The problem of finding the number of sides which will maximize the area under certain conditions leads to several interesting results. (LS)

Two new types of graph paper are described; focus-focus conic paper and focus-directrix paper. Both types make it easier to draw families of conics. Suggestions for further work are given as is a method for establishing a connection with other ways of looking at the conic sections. (LS)

A problem is posed concerning the area of certain parts of a plane geometric figure. The problem was used in a student contest with 71 of 270 mathletes answering correctly. An outline of the general proof is given. (LS)

A classic problem involving the "misuse" of mathematical induction is presented. The error in the "proof" is then exposed. The generalization of this problem is presented as a false theorem which should serve to highlight the error. (LS)

An activity is suggested which will give junior high school students practice in estimating and measuring in centimeters and millimeters. Three worksheets are given, one of which is a model for making a metric caliper. (LS)

Literacy, values, and stemming from these, purposeful action are seen as the two basic and inseparable educational objectives. The mathematics curriculum, behavioral objectives, and the affective domain are discussed in light of these two objectives. Statements from various national committees and advisory boards are included. (LS)

Five methods are given for computing the area of a regular octahedron. It is suggested that students first construct an octahedron as this will aid in space visualization. Six further extensions are left for the reader to try. (LS)

An attempt to combine the advantages of group instruction with the advantages of individualized instruction is described. The rationale, procedure, and method are discussed in turn. Test results indicated that students learn at least as well by this combined method. Student opinion was generally favorable. (LS)

What happens in the limiting cases of a parabola when the distance between the focus and directrix approaches zero and when the distance approaches infinity is discussed. (LS)