Science.K.10.A
The student is expected to
describe and classify rocks by the observable properties of size, shape, color, and texture;
Knowledge and Skills Statement
Earth and space. The student knows that the natural world includes earth materials and systems that can be observed.
Demonstrated Proficiency
The following is an example of how to assess proficiency of this student expectation (SE) or a portion of the SE.
Have each student go outdoors and select two rocks. With a partner, have students describe each rock's properties. Have students combine into groups of four and sort and classify the group's set of rocks based on observable properties. Rotate groups so students have the experience of classifying their rocks in various ways. After several rotations, ask different groups to describe their categorization. Have the class classify their rocks based on the methods shared. Students should be able to use the word property in their descriptions of their methods for rock classification. For example, students should be able to say, "I classified these rocks by the property of size. I made three groups of rocks: small, medium, and large rocks."
Supporting Information
Research
Uchenna Ogu, and Suzie Reynard Schmidt. 2009. “Investigating Rocks and Sand Addressing Multiple Learning Styles Through an Inquiry-Based Approach.” Beyond the Journal: Young Children on the Web 64, no. 2 (March 2009): 1-9.
Summary: Many children are naturally curious about the physical appearance and feel of rocks. This article gives examples of how to support different types of learners by allowing students to have conversations about the descriptions of their rocks and how they are similar and different.