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Lowery, Lawrence F.; Leonard, William H. – Journal of Research in Science Teaching, 1978
Compares frequencies and styles of questioning strategies used in Modern Biology and Biological Science Curriculum Study--BSCS Green, BSCS Yellow and BSCS Blue secondary school biology textbooks. Findings revealed significant differences between textbooks in terms of number and type of questions used. (CP)
Descriptors: Biology, Educational Research, Instructional Materials, Questioning Techniques

Leonard, William H. – Journal of Research in Science Teaching, 1983
A Biological Sciences Curriculum Study (BSCS) inquiry approach for university general biology laboratory was tested against a well-established commercial program judged to be highly directive. The BSCS was found to be more effective in learning biology laboratory concepts than the commercial program as measured by a laboratory concepts test.…
Descriptors: Biology, College Science, Concept Formation, Conventional Instruction

Leonard, William H.; And Others – American Biology Teacher, 1996
Describes the philosophy, development, content structure, and general instructional strategy of BioCom, an introductory biology curriculum for the heterogeneously mixed high school science classroom. Discusses recent recommendations by national commissions and science education research and similarities and differences between BioCom and ChemCom.…
Descriptors: Biology, Community, Curriculum Development, Educational Change

Leonard, William H.; Speziale, Barbara J.; Penick, John E. – American Biology Teacher, 2001
Presents a study that compares an introductory high school biology curriculum, Biology: A Community Context (BACC), with traditional curricula. Discusses the differences between standards-based BACC and traditional instruction. Identifies the instructional method in BACC as investigative inquiry and the activities proceed from concrete to more…
Descriptors: Biology, High Schools, Inquiry, Performance Based Assessment
Leonard, William H. – Journal of Biological Education, 2004
This article presents a brief history of the events leading up to the current US biology education standards, a brief examination of the National Science Education Standards for biology, and a description of the three recently developed biology curricula that were designed to address the new standards. Several evaluative studies of these curricula…
Descriptors: Biology, Academic Standards, National Standards, Science Education

Leonard, William H.; And Others – Journal of Research in Science Teaching, 1981
Compares the effectiveness of an Extended Discretion (ED) laboratory approach (exercising independent judgment) to a BSCS Green Version laboratory program. Results from 10 classes taught by five teachers, each teaching one experimental and one control group, favor the ED approach on a number of measures. (Author/JN)
Descriptors: Biology, Curriculum Evaluation, Grade 10, High School Students