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Assessments
NAEP Assessment Item, Grade 4:: Identify method to compare the effectiveness of fertilizers
Discipline
Science
Grades
3, 4, 5
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Professional Commentary
Students are asked to select the option that describes the best way to find out which plant food helps a particular type of houseplant grow the most. 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: 2005-4S14 No.: 3.

Ohio Science Academic Content Standards (2002)
Scientific Inquiry
Benchmarks (3–5)
C.
Develop, design and safely conduct scientific investigations and communicate the results.
Grade Level Indicators (Grade 4)
4.
Explain the importance of keeping conditions the same in an experiment.
5.
Describe how comparisons may not be fair when some conditions are not kept the same between experiments.
Grade Level Indicators (Grade 5)
4.
Identify one or two variables in a simple experiment.
National Science Education Standards
Science as Inquiry
Understanding about scientific inquiry (Grades Kindergarten - 4)