Content Strand 1: Number Sense - Item Specification (8-2005)

NS02 (Ratio and Proportion) Demonstrate understanding of the concepts of ratio, percent, and direct proportion (1.1.4)

Item Format:

· Multiple-Choice and Short-Answer items may be used to test this learning target.

Stimulus, Stem, and Prompt Rules:

· Stimulus may include numbers, tables, charts, and diagrams.
· Stimulus may include non-negative whole numbers, decimals, and fractions.

Mathematical Vocabulary and Terms:

· Terms that may be used: percent, proportion, ratio, scale, similar
· Terms that may be used with definitions or examples:
· Terms that may not be used: proportional, rational number

Item Characteristics:

a) Items may ask students to identify or determine a ratio, percent, or proportion in a given situation.
b) Items may ask students to explain or illustrate the meaning of a ratio, percent, or proportion.
c) Items may ask students to select the appropriate concept in a given situation to show understanding of ratio, percent and/or proportion.
d) Items may ask students to identify or determine a term or ratio to complete a proportion.
Items may ask students to identify or represent equivalent ratios and/or percents using pictures, diagrams, or symbols.