Presents an activity that models the changes in the concentration of carbon dioxide gas in the atmosphere during the last 200 years as determined from glacial records. (PR)

A new classification of rocks that requires no tools other than a hand lens and that is both comprehensive and informative is described. Each of the three main rock groups is treated in two-dimensional, rectangular charts with additional appended boxes that provide optional mineralogical and textural terms that can be used in rock names. (PR)

Studied developmental differences in the search constraint heuristics used in scientific reasoning using 12 undergraduates, 20 community college students, 17 fifth to seventh graders (grade 6), and 15 third graders taught to use a programmable robot. Adults use domain-general skills that go beyond the logic of confirmation and disconfirmation.…

Describes an activity where students generate a plan and test their ideas on trying to cope with a small oil spill. (PR)

Developed and tested a cognitive theory-based intervention teaching a procedure for designing simple controlled experiments to fourth graders. Found that the intervention produced significant gains in students' ability to create controlled experiments, provide valid justifications for their experiments, and evaluate experiments designed by others.…

Contrasts spontaneous and reflective knowledge integration instruction delivered using a computer learning environment to enhance understanding of displaced volume. Distinguishes the impact of instruction on students who believed scientific phenomena are governed by principles (cohesive beliefs) versus students who believed that science is a…

Inquiry training is a powerful teaching model for principals to know and teachers to implement. It is designed to teach students to engage in causal reasoning and to become more fluent and precise in asking questions. Further, inquiry training helps learners build concepts and form and test hypotheses in all curriculum areas. The current emphasis…

This standard lesson on identifying salt and sugar crystals expands into an opportunity for students to develop their observation, questioning, and modeling skills. Although sugar and salt may look similar, students discovered that they looked very different under a magnifying glass and behaved differently when dissolved in water. In addition,…

The Medicinal Plants of the Southwest summer workshop is an inquiry-based learning approach to increase interest and skills in biomedical research. Working in teams, Hispanic and Native American students discover the chemical and biological basis for the medicinal activity of regional plants used by healers. (Contains 4 tables and 1 figure.)

A science teacher and her mentor reflect on their participation in the Learning Research Cycle, a professional learning model that bridges research and practice in both university and public school contexts. Teachers do scientific research in scientists' laboratories, then bridge their scientific experiences with the design of new classroom…

Science and social studies have much to offer to all learners--including those with disabilities. However, instruction in these subjects has often been overlooked in the quest to better understand and improve leaning in English/language arts and mathematics. As we demonstrate in this paper, science and social studies help students attain skills,…

The study reported in this paper, combined qualitative (observation, interview and case study techniques) and quantitative (questionnaire and survey instruments) methods (n=3,182 Grade 10 students). The study (1) examined the relationship of current teaching practices to a number of variables that affected students' learning in science laboratory…

This packet contains four science learning activities that can be used in agricultural education courses. The activities cover these topics: (1) determining the effect of air pressure on fluid flow; (2) how lubrication and oil viscosity affect friction; (3) determining relative strengths of wood fasteners; and (4) determining the effects of…

The Zimbabwe Secondary School Science Project (ZIM-SCI) developed student study guides, corresponding teaching guides, and science kits for a low-cost science course which could be taught during the first 2 years of secondary school without the aid of qualified teachers and conventional laboratories. This teaching guide, designed to be read in…

Designed for science students in fourth, fifth, and sixth grades, the activities in this unit illustrate principles and problems related to biomass as a form of energy. (The word biomass is used to describe all solid material of animal or vegetable origin from which energy may be extracted.) Twelve student activities using art, economics,…