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May 3rd, 2008 admin Leave a comment Go to comments

The Visual Interactive Revolutionary Tactile Magnetic Classroom Membrane/ Protein Kit

The Visual Interactive Revolutionary Tactile Magnetic Classroom Membrane/ Protein Kit is part of the larger VIRTmac instructional system designed by using two-dimensional magnetic molecular models for use on a standard classroom blackboard. There are three instructional kits: Membrane/ Protein Kit (Cell Structure, Cell Size, ETC Photosynthesis, ETC Respiration, Membrane Transport, and Nerve Impulse); DNA/RNA Protein Kit (DNA Replication, Protein Synthesis, Lac Operon, Mitosis, Meiosis); and Protein Folding/Enzyme Structure Function Kit (Structure Theory, Mechanisms of Interaction).

Using the DVD instructions contained in each kit, the teacher is clearly led through the process of preparing and using the models. These instructions include note-taking techniques for the students and pedagogical techniques for the teacher.

The Membrane/Protein Kit begins with students studying eukaryotic cell structure in considerable depth and detail. The magnetic manipulatives allow the teacher to model the phospholipid bilayer, various membrane proteins, and cell organelles. The magnetic models can easily be moved on the blackboard allowing the teacher to demonstrate dynamic cell processes: i.e., movements of worker proteins, movement of substances through membrane protein channels, endocytosis, and exocytosis.

The second lesson helps students to understand the relationship between cell surface area- to-volume ratios. The dynamic aspect of the blackboard models allows the teacher to increase the membrane surface area and clearly show how the volume of the cytoplasm changes and cell needs change. Students are left with both a strong qualitative and quantitative understanding of this important concept.

Biochemical and molecular processes are, by their very nature, dynamic and complex and consequently can be quite challenging to teach. The third and fourth lessons in the kit, Electron Transport Chains in Cellular Respiration and Photosynthesis, are superb examples of effective instructional tools to help the teacher model and explain such concepts. The movement of electrons by carrier proteins, photolytic release of oxygen, hydrogen ions, and electrons are clear and easy for the instructor to show in photosynthesis. Likewise, the ETC in respiration allows the instructor to show the similar mitochondrial processes involving electron carrier proteins, NADH, [FADH.sub.2], and the chemiosmotic processes in the membranes of the mitochondria. The Nerve Impulse and Membrane Transport lessons also utilize the same instructional approaches to convey the processes occurring.

Computer simulations and movies can help the student visualize these complex cellular events; however, the student can sometimes become a passive observer in the process. The Visual Interactive Revolutionary Tactile Magnetic Classroom system allows for many of the processes to be vividly shown while at the same time engaging the students in very creative note-taking techniques.

About the Author

VIRTmac (Visual Interactive Revolutionary Tactile Magnetic Classroom) is a modern evolution of the classroom learning experience. Offering a comprehensive teaching tool designed for simplified instruction, VIRTmac helps educators transform the way they teach complex scientific topics. Created by John MacLellan, recipient of the Prime Minister’s Award for Teaching Excellence, VIRTmac provides endless possibilities for classrooms across the globe. created and developed in 2007, VIRTmac is now distributed to schools and educational companies in Canada, USA, UK, Europe, New Zealand and Australia. John’s long term vision is to connect biology teachers globally through the VIRTmac teaching tools enabling students and teachers to be unified under one common model.

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