FOSS AND CALIFORNIA STANDARDS
The Pebbles, Sand, and Silt Module supports the following Earth
Sciences Content Standards for grade 2.*
ES3. Earth is made of materials that have distinct properties and
provide resources for human activities.
As a basis for understanding this concept, students know
ES3a. how to compare the physical properties of different
kinds of rocks and know that rock is composed of
different combinations of minerals.
ES3b. smaller rocks come from the breakage and weathering of
ES3c. that soil is made partly from weathered rock and partly
from organic materials and that soils differ in their color,
texture, capacity to retain water, and ability to support
the growth of many kinds of plants.
ES3d. that fossils provide evidence about the plants and
animals that lived long ago and that scientists learn
about the past history of Earth by studying fossils.
ES3e. rock, water, plants, and soil provide many resources,
including food, fuel, and building materials, that
*Science Content Standards for California Public Schools: Kindergarten
through Grade Twelve (Sacramento: California Department of