Abstract: Method and system for assessing a student's understanding of a process that may unfold, e.g., overtime and space. The present invention provides a sophisticated approach of directing students to perform self-explanation, and enables instructors to enhance the value of this pedagogical process by providing meaningful and rapid feedback in a classroom setting.

Abstract: Method and system for assessing a student's understanding of a process that may unfold, e.g., overtime and space. The present invention provides a sophisticated approach of directing students to perform self-explanation, and enables instructors to enhance the value of this pedagogical process by providing meaningful and rapid feedback in a classroom setting.

Abstract: Disclosed is an antistatic agent composition for incorporation in synthetic resins comprised of a blend ofA. a zinc salt of a C.sub.8-22 fatty acid or a mixture of a zinc salt of a C.sub.8-22 fatty acid and a calcium salt of a C.sub.8-22 fatty acid, andB. a tertiary amine component selected from the group consisting of those represented by the formulas ##EQU1## or 3. A MIXTURE OF TERTIARY AMINES (1) OR (2) WITH A HIGHER ALIPHATIC ALCOHOL REPRESENTED BY THE GENERAL FORMULAR.sub.3 OHwhere each R.sub.1, R.sub.2, and R.sub.3 is independently selected from the group consisting of alkyl and alkenyl radicals containing from about 8 to 22 carbon atoms and n is a number of from 1 to 5.