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Assessments
NAEP Assessment Item, Grade 8: Solid blocks in jar of liquid
Discipline
Science
Grades
6, 7, 8
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Professional Commentary
Students are asked to look at the two pictures of blocks floating in liquids and then select the statement that explains what they see. This multiple choice question is a sample test item used in past National Assessments of Educational Progress (see About NAEP). The URL link above takes the user to the NAEP test item, with access to performance data by various subgroups, a scoring guide and student responses, and the content on which the item is based. The NAEP web site allows users to build their own printable database of test items by clicking on Add Question in the upper right hand corner of the screen. NAEP Reference Number: 2005-8S13 No.: 1.

Ohio Science Academic Content Standards (2002)
Physical Sciences
Benchmarks (9–10)
C.
Describe the identifiable physical properties of substances (e.g., color, hardness, conductivity, density, concentration, ductility). Explain how changes in these properties can occur without changing the chemical nature of the substance.
Scientific Inquiry
Grade Level Indicators (Grade 6)
3.
Distinguish between observation and inference.
National Science Education Standards
Science as Inquiry
Abilities necessary to do scientific inquiry (Grades 5 - 8)
Physical Science
Properties and changes of properties in matter (Grades 5 - 8)