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PEBBLES, SAND, AND SILT |
GOALS
The Pebbles, Sand, and Silt Module consists
of four sequential investigations, each designed to introduce
concepts in earth science. The investigations provide experiences
that heighten students' awareness of rocks as earth materials
and natural resources. They will come to know rocks by many
names and in a variety of sizes. Pebbles and sand are the
same material—just different in size.
FOSS EXPECTS STUDENTS TO
- Develop a curiosity and interest in the physical world
around them.
- Observe, describe, and sort earth materials based on properties.
- Separate earth materials by size, using different techniques.
- Observe the similarities and differences in the materials in a river rock
mixture: silt, sand, gravel, and small and large pebbles.
- Explore places where earth materials are found and ways that earth materials
are used.
- Compare the ingredients in different soils.
- Organize and communicate observations through drawing and writing.
- Acquire the vocabulary associated with earth materials.
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