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Mendeleev and the Periodicity of the Elements



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Project Mendeleev and the Periodicity of the Elements 1 Kevin D McMahon 625 SC 10 29 06 Project Mendeleev and the Periodicity of the Elements The project was conducted in my 5th period Honors Chemistry and required three days for completion Day one included a discussion of the objectives of the activity to recreate Mendeleev s original Periodic Table an introduction and procedures Students were then allowed to begin the activity Day two students continued to work with their partner and completed the task Day three we discussed the process by which they arrived at their conclusions metacognition their results relative to Mendeleev s original Periodic Table and then we concluded with a brief assessment of the activity A considerable amount of video was recorded during the three class sessions editing was therefore required to produce a presentation of appropriate length The editing gave me the opportunity to examine the introduction student activity and reflection processes in detail Furthermore because I have done this activity quite a number of times it also allowed me to compare the difference between past and present performance of this activity My first observation is that I was more careful in articulating the goals for this activity than I have done in the past I was more sensitive to the real objective of the activity which was to give students an opportunity to solve a puzzle and to allow them the freedom to explore solutions with as little guidance as possible No doubt this heightened Project Mendeleev and the Periodicity of the Elements 2 sensitivity was due to my increasing awareness of my own interest in the nature of science and the functioning of reason and intuition within this domain It was evident to me that the students benefited from this clearer articulation All the students were engaged in completing the activity and there were more groups who completed the assignment successfully than in the past The remaining observations are regarding the



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