The field of geometrical optics features a broad knowledge base concerning conceptual learning difficulties and student conceptions. However, in contrast to other areas of physics, no widely used standard test instrument exists to assess middle school students' conceptual knowledge of geometrical optics. This is even more true for other areas of…

Gateway science courses are an ongoing obstacle to recruitment into STEM fields (Science, Technology, Engineering, and Mathematics). Students come into courses that have a high cognitive load, which makes success in the course challenging. Instructional design can be used to reduce cognitive load. The findings demonstrate that leveraging pre- and…

The purpose of this study is to investigate how three teachers guided their students to learn science using interactive dynamic visualizations incorporated in an inquiry digital unit. The results show that the teachers' guidance varied in frequency, occasion, and content type. Each teacher demonstrated a different instructional approach in…

We discuss collecting data simultaneously from many different instruments, including both qualitative and quantitative sources. A list of instruments used is provided, and data collection methods are described. Many practical logistical concerns are discussed, warning of potential pitfalls to be avoided. This article is intended to be a practical…

Describes the validity and reliability of the Self-Report Knowledge Inventory (SRKI) and the Opportunity to Learn Inventory (OTLI) as self-assessment tools. Both instruments were found to be friendly, relatively easy to design, easy to respond to, easy to score, time-saving, non-threatening, valid, and reliable for comparing and making decisions…

Many high school and college students experience serious difficulties in understanding as well as applying fundamental concepts in physics. The study reported in this paper focused on the difficulties in learning about vectors in physics and strategies for making the teaching of vectors more interesting and meaningful for students. Specifically,…

Describes the use of a quiz that asks elementary but probing questions about chemistry and delivers the message to students that they have much to gain from chemical education. Arises out of concern over lack of student motivation in chemistry. (DDR)

Reports on effects of Individualized Goal Setting (IGS) Audio Tutorial (AT) instruction compared to classic AT instruction and effects of pretesting compared to no pretesting on students' locus of control. Indicates no significant effect on students' locus of control between IGS-AT v AT or between pretesting v no pretesting. (DS)

Conducted a study to examine the influence of grouping, by means of cooperative learning, on elementary preservice teachers' (n=84) science teaching efficacy. Confirms the relative superiority of heterogeneous cooperative learning. Concludes that a well-designed science teaching methods experience can enhance the development of science teaching…

Described a probe that can assess the learners' understanding of scientific ideas in conditions that do not demand closure on a single interpretation, and where learners can demonstrate certainty or otherwise in several possible alternatives. Can be used in monitoring conceptual change when intuitive understanding of scientific phenomena is to be…

Discusses the advantages of using a pretest in introductory agronomy courses. Provides a pretest that has been developed for use in an introductory crops course taught at Southern Illinois University. Includes 25 definitions, 17 true-false and multiple choice questions, and 6 short answer questions. (TW)

This paper presents the designs underlying an IPI approach to ninth grade science implemented in the Jamesville-DeWitt schools in New York State. Briefly described are the generalizable instructional model, evaluation systems for assessing individual performance and the effectiveness of the instructional program and the support systems which make…