Describes the benefits and techniques of having students create models of chemical compounds. This hands-on approach uses colored paper and other inexpensive materials to construct the models. A step-by-step approach provides objectives, materials, an explanation on how to calculate chemical ratios, procedures, follow-up activities, and a resource…

Illustrates various methods to determine the perimeter and area of triangles and polygons formed on the geoboard. Methods utilize algebraic techniques, trigonometry, geometric theorems, and analytic geometry to solve problems and connect a variety of mathematical concepts. (MDH)

Presents methods for teaching two mathematical concepts that utilize visualization. The first illustrates a visual approach to developing the formula for the sum of the terms of an arithmetic sequence. The second develops the relationship between the slopes of perpendicular lines by performing a rotation of the coordinate axes and examining the…

Presents two ideas to help beginning mathematics teachers. The first presents a way to record and grade homework. The second suggests a manipulative to help students understand the trigonometric concept of reference angle. (MDH)

Provides Terrapin LOGO programs that use graphic manipulatives--squares, logs, and units--to form the area of a rectangle as a graphical representation for any trinomial of the form: Axx + Bx + C. An important component is the connection of the procedural skill of trinomial factoring to the visualization of the accompanying rectangular displays.…

Presents instructions for a class project to produce a raised relief map. Reports that students will learn to interpret elevations from contour lines, interpret map symbolization, realize that the area represented is a real area, and redefine the meaning of a map scale. Includes a list of materials needed and details of construction. (DK)

A technique used to teach removal of foreign bodies from eyes uses freshly slaughtered calves' eyes in which metal particles are embedded at different depths. The approach develops both mechanical skills and problem-oriented evaluation and management of patients. Preparation and presentation of workshops using the technique are also discussed.…

A multisensory program using a counting technique was effective in teaching math skills to three elementary students with mild disabilities. Results showed significant gains in acquisition of target skills as well as maintenance and generalization to novel math problems. (Author/DB)

An activity in which students use manipulative materials to help solve simple algebraic equations using the operations of adding inverses, removing opposites, and sharing equally is presented. Directions, examples, the rationale, and cautions are included. (KR)

The idea that the methodologies provided by research should serve as models in developing practices in the classroom and in finding adequate solutions to students' and society's problems is discussed. The thoughtfulness of science, the scientific method, and science teaching are included. (KR)

Six-year-olds from Switzerland (n=30) and Argentina (15 middle- and 15 lower-class) were tested for understanding of inequalities between multidigit numbers and place value. Students could explain size relationships better than place value. The three types of children performed differently. (Contains 30 references.) (JAF)

Presents 24 activities related to the theme of area to illustrate how algebra can empower students, not impede their progress. Activities use grid tools, manipulatives, computational tools, and paper-and-pencil tools to facilitate access, discourse, independence, and multiple representations. Well-chosen themes offer connections, motivation,…

This study developed performance assessments from hands-on instructional activities and examined their reliability and validity for obtaining individual achievement data. Ethnic group comparisons indicated that Anglos scored higher, on average, than Latinos on all achievement measures. The magnitude of differences varied by curricular experiences…

Describes a science project in which students make models of polymers using polyvinyl alcohol solution. Students make T-shirts using polymer paint to remind them of their activities. (MDH)

Describes a course for talented high school students that focuses on DNA science and technology. Employs Cold Spring Harbor's DNA Science laboratory manual. Engages students in performing sickle-cell anemia and thalassemia tests in rabbits. (DDR)