Practice of Learning Activities to Improve the Ability to Identify Igneous Rocks Using Only Granitoids for Observation

Abstract

Igneous rocks must be divided on the basis of the type and abundance ratios of rock forming minerals. However, beginners tend to use magnetism or color tone as criteria for dividing igneous rocks. To avoid this, in this study, rock specimens to be observed by the learners were limited to granitoids. Learners began to divide these igneous rocks on the basis of their mineral types and abundance ratios. In addition, they actively tried to find differences and similarities by comparing specimens.