Included is information regarding: fabrication of light emitting diodes, their operation as semiconductors, and an experiment demonstrating electroluminescence; experimenting with Random Access Memory (RAM) circuits; demonstrating Coriolis effect; measuring the diameter of an electron beam, E.H.T. meters; launching a trolley by catapult; a "random…

Masters of worksheets which provide experience with nonstandard constructions are provided. (MK)

Ways are presented to help students develop precomputational fraction concepts and skills using a circular-region or "pie" model. (MK)

Examines the influence of gender, reading level of student, and source of data on science concept formation and retention. Results indicate that reading level of students does influence science concept formation and retention, but gender and source of data (method of instruction) do not. (MA)

These worksheets involve the use of tangram pieces in creating geometric shapes and in analyzing properties of convex quadrilaterals. (DT)

Diverse activities using large blocks are described. By building and comparing configurations children can be led from concepts like long and high to concept of ratio. Games and activities to help build other concepts are also described. (SD)

What is number sense, why it is important, how it is taught, and how it is measured are each discussed. Examples with concrete materials, calculators, and pattern recognition are included. (MNS)

How principals can help teachers to use manipulative materials for mathematics instruction is discussed, with eight tips presented. (MNS)

Described are activities using jar lids for sorting, classifying, and graphing; ordering; and measuring circumference and diameter. (MNS)

Describes one teacher's use of traditional wooden blocks in fifth-grade curriculum. Notes that use of blocks can teach communication, teamwork, precision, and arithmetic concepts. Also describes four easy classroom block projects. (TM)

Studied (n=87) elementary cooperating teachers' self-reported familiarity with, availability of, and use of 11 common manipulative devices and their perceptions about factors to consider when using manipulatives to teach mathematics. Found limited use of manipulatives and a pattern of diminishing use through the grades. (20 references) (Author/MKR)

Gives a lesson plan for a mathematics activity using balloons which shows connections between the algebraic concepts of slope, linear functions, and power functions and the geometric concepts of circle, sphere, volume, and pi. Includes reproducible student worksheets. (MKR)

Presents activities that use physical models to help students see the natural progression for steps in mathematical induction. Contains reproducible student worksheets. (MKR)

Examined the effects of activity period duration on preschoolers' play with playdough and blocks. Wilcoxon signed-rank tests showed significantly more constructive and dramatic play, and less functional play, at the end of the play period. Differences between the quality of play in block and playdough centers were found. (Author/BB)

Authors have found that students have experience with metric units for volume and length; however, students have difficulty conceptualizing mass measurements in terms of grams and kilograms. Presents an activity, "Mass Appeal," where students use an equal arm balance to become familiar with the gram. (PR)