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Direct linkGarvey, Sarah L.; Shahmohammadi, Golbon; McLain, Derek R.; Dietz, Mark L. – Journal of Chemical Education, 2015
A laboratory experiment is described in which students compare two methods for the determination of the calcium content of commercial dietary supplement tablets. In a two-week sequence, the sample tablets are first analyzed via complexometric titration with ethylenediaminetetraacetic acid and then, following ion exchange of the calcium ion present…
Descriptors: Dietetics, Comparative Analysis, Statistical Analysis, Laboratory Experiments
Scaffolded Instruction Improves Student Understanding of the Scientific Method & Experimental Design
D'Costa, Allison R.; Schlueter, Mark A. – American Biology Teacher, 2013
Implementation of a guided-inquiry lab in introductory biology classes, along with scaffolded instruction, improved students' understanding of the scientific method, their ability to design an experiment, and their identification of experimental variables. Pre- and postassessments from experimental versus control sections over three semesters…
Descriptors: Scientific Methodology, Research Design, Predictor Variables, Pretests Posttests
Bellwood-Howard, Imogen – School Science Review, 2012
Designing investigative skills sessions for key stage 5 students based on field research in the Ghanaian savannah prompted reflection on the similarities and differences in the ways farmers and students learned about and applied scientific methodology. Circumstantial constraints mean that farmers' experiments were less controlled than those…
Descriptors: Teaching Methods, Scientific Methodology, Classroom Environment, Classroom Techniques
Download full textCarlin, Joel L. – Bioscene: Journal of College Biology Teaching, 2010
Dissections of single species (e.g., fetal pig) are a common student learning activity in introductory biology courses. Such dissections demonstrate location of anatomical parts and provide dissection practice but provide less opportunity for student critical thinking, numeracy and demonstration of the scientific method. A comparative anatomy lab…
Descriptors: Scientific Methodology, Laboratory Procedures, Biology, Anatomy
Reynolds, Julie A.; Thompson, Robert J., Jr. – CBE - Life Sciences Education, 2011
One of the best opportunities that undergraduates have to learn to write like a scientist is to write a thesis after participating in faculty-mentored undergraduate research. But developing writing skills doesn't happen automatically, and there are significant challenges associated with offering writing courses and with individualized mentoring.…
Descriptors: Writing Skills, Writing Instruction, Peer Evaluation, Writing Improvement
Treadwell, Kimberli R.H. – Teaching of Psychology, 2008
Internal and external validity are key concepts in understanding the scientific method and fostering critical thinking. This article describes a class demonstration of a "botched" experiment to teach validity to undergraduates. Psychology students (N = 75) completed assessments at the beginning of the semester, prior to and immediately following…
Descriptors: Scientific Methodology, Validity, Critical Thinking, School Psychology
