The purpose of this exploratory experimental study was to examine how online cognitive facilitation that promotes cognitive presence, while keeping facilitator's social presence constant, affects student learning and satisfaction in an online community of inquiry. In this context, we explored the following questions: (1) Does online high cognitive…

This study investigated the effects of learner-generated pictures on science learning relative to both a verbal strategy and a control condition, and to determine the role of individual differences. Results revealed weak effects favoring a drawing strategy for males and females, and a holistic strategy for females only. (Author/GK)

Two experiments on multiple-choice assessment of students learning from sentences were conducted. Interference arising from intersentence similarity was a function of both the kind of learning strategies students were instructed to employ and the kind of strategies they reported having employed spontaneously. Implications for test construction and…

Describes a study of fifth and sixth graders that investigated the effects of cooperative training and ability grouping on microcomputer learning. Results on four measures of achievement did not support the use of cooperative learning or ability grouping to enhance achievement in computer-assisted instruction. (Author/LRW)

Describes the orientation and management of a science hotline managed by the University of Kentucky for the benefit of teachers. Results include a more positive public image of science and the creation of links between academic scientists and precollege teachers. (DDR)

Provides rich description of the biological diversity found in a 30-mile section of Nebraska known as the "biological crossroads." Argues that the seven major associations of the Niobrara River valley provide a great classroom. Includes a complete listing of plant species. (DDR)

Presents a series of laboratory exercises designed to introduce students to a realistic experience in biological research that is feasible with large numbers of beginning biology majors. The exercises center on the study of alkaline phosphatase. (DDR)

Defines approaches to inquiry-based science teaching and describes many ways in which to conduct this kind of science instruction. Argues that with science reform underway, opportunities exist to transform classrooms into environments with active learners engaged in inquiry. (DDR)

Describes a teacher's experiences with Global Lab, which is depicted as a real-world networked science laboratory connecting individuals investigating global and local environmental change. Focuses on techniques to monitor indoor air quality. (DDR)

Although museums are considered optimal venues for informal learning, this study concludes that most school classes visiting museums are restricted and structured, teachers use mainly task-orientated teaching practices, and the museum activities are rarely linked to topics being studied at school. A research-based framework to guide teachers in…

Proposes a model that displays the five components of the statistical problem-solving process. Focuses on the collection of coins in sets by mint location and fully describes the procedures. Includes ideas for data collection and analysis. (DDR)

Compares the acquisition of the syntax of negation in first-language development and second-language acquisition, particularly the acquisition of colloquial French and German by native speakers of Spanish. The comparison is intended to shed light on the principles and mechanisms underlying first- and second-language development. (67 references)…

Describes an educational program that asks students to attempt to prove that the earth is spherical and that it rotates. Presents tips to pique student interest and charts related to sensing the spin, nonrotation notions, flat earth fallacies, evidence that the earth is spherical and rotates, and the role of watersheds in proving that the earth…

Examines learner strategy in two English-as-a-Second-Language classes in Singapore; one class received instruction in asking higher-order questions, whereas the other did not. The treatment class asked significantly more higher-order questions and provided significantly more elaborated responses during small group discussions. (51 references)…

Illustrates the construction of conceptual models on pressure and flotation using high school students' previous ideas on these concepts. Identifies three models and uses them to analyze students' ideas about physical phenomena and to recognize the inferential structure they use. Contains 28 references. (DDR)