This paper focuses on one Grade 5 class (9 females; 9 males) who worked in student-pairs to view five digital learning object (DLO) lessons created by the authors and meant to introduce students to the nature of models, the particle nature of matter, and physical change. Specifically, the paper focuses on whether DLO design elements could assist…

A Macintosh microcomputer and MacPaint program can be used to quickly make charts of structural formulas that fill standard-sized paper with a minimum of instruction, and smaller drawings or structures or fragments may be inserted into text composed with a word processing program. Shows how this is done. (JN)

Described is the application of microcomputers to predict reaction rates based on theoretical atomic and molecular properties taught in undergraduate physical chemistry. Listed is the BASIC program which computes the partition functions for any specific bimolecular reactants. These functions are then used to calculate the pre-exponential factor of…