FOCUS: Studying rocks helps us to piece together the story of how the geosphere, the Earth’s rocky outer layer, has been shaped and changed over time. We’ll meet some rocks that formed by three different processes, examine some minerals we find in rocks, and look for fossils of ancient creatures. Underlying all the Earth’s land and water, rocks provide a foundation that supports the living world, gives clues about past life forms, and provides us with many materials that we use in our everyday lives.
Objective: To begin to explore and ask questions about rocks and minerals.
In small groups, have the children sit in a circle. Give each child a paper sandwich bag containing a small rock. Have the children feel their rock without looking at it, noticing its smoothness, texture, any irregularities in the shape, if the edges seem rounded or sharp etc. Then, on the count of three, have the children put their bag in front of the person on their right. Now have them feel the pebble in their new bag, pass again, and repeat until everyone has had a chance to feel three or four different rocks. Finally, let the children take the rock they have out of the bag to look at it. Have them set all the rocks out in front of them so everyone can admire the whole collection. Ask children for ideas about why rocks can be so different from each other.
Materials: brown paper lunch bags, small rocks (from one to four inches in diameter) with different textures and shapes, one per student.
STATIONS: The following three activities are best done in small groups and so could be set up as stations: Rocks Up Close, Fossil Fun, and Mineral Mysteries or Upper Grades Challenge: Testing Minerals.
ROCKS UP CLOSE
Objective: To examine granite, looking for the mineral crystals in it, and meet some other rocks.
Give each child a piece of granite to examine with a magnifying lens, looking for the different-colored mineral crystals in the rock. Continue reading Rocks and Minerals – Activities