This volume includes the tests, questionnaires, letters, manuals, findings, and analyses associated with the field evaluation of "ThinkAbout," a series of 60 15-minute programs organized in 13 clusters and designed to strengthen the reasoning skills of fifth and sixth graders, and to review and reinforce language arts, mathematics, and study skills. It includes the following materials: (1) pertinent case study agendas; (2) the ThinkAbout Tests; (3) a list of analyzed tests and test analysis forms; (4) the content and use of ThinkAbout, and examiner questionnaires; (5) survey questionnaires, cover letters, and follow-up letters; (6) the examiners' manual; (7) testing study orientation agenda; (8) graphs of test results by state; (9) tables showing the number of students exceeding criterion levels on the Comprehensive Tests of Basic Skills (CTBS) by state; (10) findings for individual CTBS test items; (11) teacher attitudes toward problem solving item data; and (12) analyses of factors influencing CTBS test performance other than the television broadcast. (LMM)