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Ohio's Academic Content Standards in Mathematics

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Return to Grade 9 Indicators

Ohio Standard: Measurement Standard
Grade Level Indicator: (Grade: 9) 1. Convert rates within the same measurement system; e.g., miles per hour to feet per second; kilometers per hour to meters per second.
1
NAEP Assessment Item, Grade 12: Pool With a Leak
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ORC# 1992
Resource Information
Resource URL: http://nces.ed.gov/nationsreportcard/itmrls/portal.asp?questionl...
Resource Type: Assessments
Discipline: Mathematics
Grades: Grades 6–12
Professional Commentary: Students must determine how long it takes the water level to drop one foot in a leaky swimming pool. This multiple-choice question is a sample test item used in grade 12 in the 1992 National Assessment of Educational Progress (see About NAEP)....
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2
Cardiac Output, Rates of Change, and Accumulation
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ORC# 1468
Resource Information
Resource URL: http://illuminations.nctm.org/LessonDetail.aspx?ID=U136
Resource Type: Content Supports -- Activities and rich problems
Discipline: Mathematics
Grades: Grades 9–12
Professional Commentary: This four-part activity explores rates of change and accumulation in the context of measuring the amount of blood being pumped by a heart. In the first part, Make a Conjecture, students think about the mathematics involved in determining the amount of blood being pumped by a heart....
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