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ORC Resource Number #3127
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Air in Soil
PROFESSIONAL COMMENTARY

Students will use water to measure the porosity of topsoil. This will help determine the percent of air space in topsoil. Students will also design a controlled experiment to determine the amount of water in soil samples. The task assesses students' abilities to make simple observations, collect and organize data, apply mathematical concepts, design an experiment, and generalize inferences from their observations and apply their understanding to a hypothetical situation. This task is designed to take students approximately 25-30 minutes to complete. This performance assessment is part of the PALS (Performance Assessment Links in Science) collection. (author/ts)

OHIO STANDARDS
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Science Academic Content Standards
Earth and Space Sciences
Scientific Inquiry
NATIONAL STANDARDS
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National Science Education Standards
Science as Inquiry
Earth and Space Science
RESOURCE TYPE
Assessment Resource
STANDARDS ALIGNMENT
Grades 3–5
TOPICS
Science --
Science and Inquiry;
Inquiry Process Skills;
Earth and Space Science;
Earth Systems;
Rocks, Minerals, Soil;
KEYWORDS
porosity;
soil;
performance assessment;
measurement
Publisher: Center for Technology in Learning