12C contained; why chose 12C as a benchmark for "Avogadro's number"; how to determine the value of "Avogadro's number" and so on. And this paper also expounded that teachers should take advantage of the students' previous experience for "provisions", give full play to the students' autonomy, mine the resources of science history, reveal the revision of knowledge, combine with the experimental process to highlight the important significance of experiments."/>
Analysis of “Avogadro's Number” Learning Dilemma and Countermeasures
Analysis of “Avogadro's Number” Learning Dilemma and Countermeasures
YAO Meng-Juan1, ZHANG Xiao1, WU Han-Qing1,2
1. The College of Education of Capital Normal University, Beijing 100037, China; 2. The department of Chemistry of Capital Normal University, Beijing 100048, China
Abstract This paper explored the mystery behind the "provisions" expressed of "Avogadro's number":how many atoms are 0.012 kg 12C contained; why chose 12C as a benchmark for "Avogadro's number"; how to determine the value of "Avogadro's number" and so on. And this paper also expounded that teachers should take advantage of the students' previous experience for "provisions", give full play to the students' autonomy, mine the resources of science history, reveal the revision of knowledge, combine with the experimental process to highlight the important significance of experiments.