OST Algebra I case studies
OST Algebra I · Put your knowledge to work in context.
The Ohio State Tests (OST) in Algebra I are Ohio's end-of-course assessments in mathematics, administered through the Ohio Department of Education and Workforce's testing program. The exam is intended for Ohio students completing an Algebra I course, and results feed into state accountability reporting and, depending on a student's graduation pathway, into graduation requirements. The OST Algebra I case studies are 5 cases and about 3,125 words.
1Filling Station Flow-Rate Claim
The environmental club at North Ridge High School is evaluating a vendor's claim that a new water bottle filling station dispenses water at 0.40 gallons per minute. Maya tests the station by filling a 1-liter bottle while timing it with a stopwatch that displays to the nearest 0.1 second.
614 words, about 3 min2T-Shirt Fundraiser Order Size
The North Ridge robotics club is selling T-shirts to raise money for a competition. The supplier charges 8.50 per shirt plus a 120 setup fee.
613 words, about 3 min3Model Rocket Height Data
A physics class launches a model rocket straight up and uses a motion sensor to record its height above the ground every second. The data are: at 0 s, 5 ft; at 1 s, 37 ft; at 2 s, 53 ft; at 3 s, 53 ft; at 4 s, 37 ft; at 5 s, 5 ft.
635 words, about 3 min4Part-Time Jobs and GPA Survey
The student newspaper at North Ridge High School surveys 300 students about part-time jobs and grades. Of the 180 students who report having a part-time job, 90 say their grade point average is 3.0 or higher.
594 words, about 3 min5Summer Job Pay Comparison
Two summer job offers arrive on the same day. Job A pays 11.50 per hour plus a 3% commission on weekly sales, but commission is paid only on the first 2,000 of sales each week.
669 words, about 3 min