This fun-filled lesson encourages students to explore the properties of minerals. Students will explore the property of hardness by performing a scratch test. In this lesson students classify mineral specimens by hardness. Following the activity, students compare their results to the actual Mohs Hardness Scale. This lesson includes two "thinking routines" and a comprehension passage on the Mohs Hardness Scale.
• Color Photograph of Talc
• Thinking Routine: See - Think - Wonder
• Hardness Scale Recording Sheet
• Mohs Hardness Scale
• Comprehension Passage on the Mohs Hardness Scale
• Thinking Routine: I Use to Think...But Now I Think
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