Mathematics, Standard D: Measurement
Performance Standards - Grade 8

By the end of grade eight, students will:

D.8.1 Identify and describe attributes* in situations where they are not directly* or easily measurable (e.g., distance, area of an irregular figure, likelihood of occurrence)

D.8.2 Demonstrate understanding of basic measurement facts, principles, and techniques including the following

• approximate comparisons between metric and US Customary units (e.g., a liter and a quart are about the same; a kilometer is about six-tenths of a mile)
• knowledge that direct measurement* produces approximate, not exact, measures
• the use of smaller units to produce more precise measures

D.8.3 Determine measurement directly* using standard units (metric and US Customary) with these suggested degrees of accuracy

• lengths to the nearest mm or 1/16 of an inch
• weight (mass) to the nearest 0.1 g or 0.5 ounce
• liquid capacity to the nearest ml
• angles to the nearest degree
• temperature to the nearest C or F
• elapsed time to the nearest second

D.8.4 Determine measurements indirectly* using

• estimation
• conversion of units within a system (e.g., quarts to cups, millimeters to centimeters)
• ratio and proportion (e.g., similarity*, scale drawings*)
• geometric formulas to derive lengths, areas, volumes of common figures (e.g., perimeter, circumference, surface area)
• the Pythagorean* relationship
• geometric relationships and properties for angle size (e.g., parallel lines and transversals; sum of angles of a triangle; vertical angles*)

*See Glossary.

Content Standard D

For questions about this information, contact Diana Kasbaum (608) 266-7712

Last updated on 10/1/2009 2:57:18 PM