A Biological Sciences Curriculum Study (BSCS) inquiry approach for university general biology laboratory was tested experimentally against a well‐established commercial program which was judged to be highly directive. The experimental approach made systematic use of science processes, development of concepts via questioning, and of requirements on the student to exercise discretion. Experimental group students scored similarly to comparison group students on a pretest of biological concepts, but scored significantly higher (p < 0.005) when the same test was given at the end of the semester.
This experimental study compared an interactive computer/videodisc learning approach to the conventional laboratory approach for learning biology concepts and science process skills. Students at a large midwestern university were randomly assigned to instruction on respiration and biogeography by interactive videodisc or a traditional laboratory investigation teaching the same concepts. The videodisc delivery system consisted of a TRS‐80 Model III microcomputer interfaced to a Pioneer laser disc player and a color TV monitor. Results show no statistically significant differences between the two approaches for student grades on laboratory quizzes, laboratory reports, and the laboratory final exam. However, the interactive videodisc group required approximately one‐half the classroom time used by the conventional laboratory group. The two approaches appear equivalent when evaluated by traditional learning outcomes, but the interactive videodisc strategy was significantly more time efficient than a traditional laboratory approach.
The purpose of this research was to determine the relative effects of the presentation style of questions inserted into text materials for students in university introductory biology. The sample was randomly assigned to seven treatment groups of approximateiy equal size and read a 2,334-word passage on bacterial adaptations taken from a popular university general biology textbook. Experimental treatment groups read the same passage with (1) questions placed at the beginning of selected paragraphs and with the questions presented with (2) underlining, (3) in uppercase. (4) set above the paragraph, (5) underlined and set above. and (6) set above in uppercase respectively. The criterion variable was a 20-item multiple-choice exam with five possible answers per question given once to all students immediately after they read the passage and again exactly four weeks later. Presentation strategy groups were contrasted against the reading without questions groups. Four of the six groups reading with questions at the beginning of the paragraph scored significantly higher on the test given immediately after the reading than the group reading without questions. There were no significant diierences between any of the group scores for the test given four weeks after reading. Other differences in results between these strategies and implications for text writers are discussed.
This study was designed to learn if students perceived an interactive computer/videodisc learning system to represent a viable alternative to (or extension of) the conventional laboratory for learning biology skills and concepts normally taught under classroom laboratory conditions. Data were collected by questionnaire for introductory biology classes at a large midwestern university where students were randomly assigned to two interactive videodisc/computer lessons titled Respiration and Climate and Life or traditional laboratory investigation with the same titles and concepts. The interactive videodisc system consisted of a TRS-80 Model III microcomputer interfaced to a Pioneer laser-disc player and a color TV monitor. Students indicated an overall level satisfaction with this strategy very similar to that of conventional laboratory instruction. Students frequently remarked that videodisc instruction gave them more experimental and procedural options and more efficient use of instructional time than did the conventional laboratory mode. These two results are consistent with past CAI research. Students also had a strong perception that the images on the videodisc "were not real" and this factor was perceived as having both advantages and disadvantages. Students found the two approaches to be equivalent to conventional laboratory instruction in the areas of general interest, understanding of basic principles, help on examinations, and attitude toward science. The student-opinion data in this study do not suggest that interactive videodisc technology serve as a substitute to the "wet" laboratory experience, but that this medium may enrich the spectrum of educational experiences usually not possible in typical classroom settings.A number of justifications for computer-assisted instruction (CAI) in science education have been offered since it was first introduced about two decades ago.Among the early ones were economizing on laboratory facilities and materials, saving instructional time, individualization of student work, drill and practice, and rapid evaluation of student response and feedback. As computers became more sophisticated, rationale expanded to highly motivating and interactive simulations and games which enrich the educational experience, ability to manipulate abstract 0
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