Home School Life Journal From Preschool to High School

Home School Life Journal ........... Ceramics by Katie Bergenholtz
"Let us strive to make each moment beautiful."
Saint Francis DeSales

Nature Study, Lesson 209: Granite and other Igneous Rocks

Demonstrating the Rock Cycle

We have studied the rock cycle before, 
Volcanoes and Igneous Rocks Pop-Up Book
 as well as igneous rocks specifically, so I began by reviewing this with them.
It seems with every nature walk we take, the boys come home with their pockets full of rocks,
but it was the Rock and Gem show at Bay's Mountain that really sparked their interest in rocks. So when the    Handbook of Nature Study blog's Outdoor Hour study was Granite and other Igneous rocks, we decided to  do a formal nature study.
We didn't get any granite samples there, but we did get a sample of another igneous rock, Pegmatite.
So, we decided to do a study of granite and Pegmatite. We looked each up in field guides and they drew pictures in their journals.
They also made a Venn diagram, comparing and contrasting the two.
We could see the shiny, silver-gold Mica in it, as well as streaks of pink, white and gray.
We speculated that the pink was some rose quartz because it was so shiny,  but that the white and gray were feldspar because they were less crystal-like.

sources and inspiration:
  • Handbook of Nature Study, Anna Comstock, pages 743-750 (Introduction to Rocks and Minerals and Lessons 209—210).
  • Handbook of Nature Study blog


  1. My kids certainly always come back from our walks with their pockets filled with rocks and sticks :)
    I remember going to a rock show when I was a kid and thinking it was the coolest thing.

  2. What a beautiful rock you had to compare to granite! Love the pink tones and the crystals too. I really like the Venn Diagram to compare the rocks for your journals. Thank you so much for sharing your study with the OHC Blog Carnival.

  3. Pegmatite ... what a beautiful rock! Love the Venn diagram .. good idea!

  4. I love the idea of doing a Venn diagram to compare/contrast the two rocks.


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