What observations can you make about your rock?1. round outside
2. rough on the outside but no jagged edges
3. inside is hollow
4. inside has jagged, crystal appearance
5. brownish outside and purple inside
How did this rock form?
Coarsely crystallized in high-temperature veins, finer-grained crystals may line low-temperature veins and geodes in sedimentary rocks
Coarsely crystallized in high-temperature veins, finer-grained crystals may line low-temperature veins and geodes in sedimentary rocks
What don't you know about the rock yet?
1. what areas of the world it is found in
2. can the average person find this or are there certain clues to look for
3. how large are the rocks
4. is amethyst a delicate crystal
Good observations, given it was a picture. In my face to face class, I use a sedimentary rock from the local area. By the end of the unit, students really can tell me soemthing about the rock. For this course, I wanted to point out how students come to the classroom with varied knowledge and experiences and most have little to no knowledge of rocks and minerals.
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