OST Grade 4 Math case studies
OST Grade 4 Math · Put your knowledge to work in context.
Ohio's State Test (OST) Grade 4 Mathematics is the state assessment Ohio students take in fourth-grade mathematics. It is intended for Grade 4 students in Ohio public schools and for the families, teachers, and tutors who support them. The OST Grade 4 Math case studies are 5 cases and about 3,378 words.
1Spirit Shirt Order: Grouping, Budget, and a Color-Pattern Claim
The fourth-grade team at Maple Ridge Elementary is ordering spirit shirts. The four classes have 26, 24, 27, and 23 students, and every student orders exactly one shirt.
644 words, about 3 min2Notebook Pallets: Rounding Estimates Versus Exact Bin Counts
The school store at Lincoln Elementary received 6 identical pallets of spiral notebooks, and the invoice states that each pallet holds 1,248 notebooks. Volunteers must repackage every notebook into clear bins that hold 36 notebooks each.
632 words, about 3 min3Two Raised Beds: Comparing Planted Fractions and Buying Compost
Two raised beds behind Rosa Parks Elementary are the same size. Bed A is divided into 8 equal sections: 3/8 planted with beans, 1/8 with peppers, 2/8 with lettuce, and 1/8 with marigolds.
656 words, about 3 min4Bean Plant Data: A Line Plot, a Combined Strip, and a Visitor's Prediction
Okafor's class grew one bean plant from seed and measured it to the nearest 1/4 inch after three weeks. The 13 measurements, in inches, are: 2 1/2, 3, 3 1/2, 3 1/2, 3 3/4, 4, 4, 4 1/4, 4 1/2, 4 1/2, 5, 5 1/4, 5 1/2 Students will show the data on a line plot with a number line marked in quarter inches and one X per plant.
701 words, about 4 min5Anniversary Flag: Straight-Angle Corners, Diagonals, and Shape Rules
The fourth grade is designing a flag for the school's 50th anniversary on a rectangle 3 feet wide and 2 feet tall. The art teacher's design rules require exactly one triangle with exactly one right angle, exactly one quadrilateral with two pairs of parallel sides and no right angles, and at least one line of symmetry for the whole flag.
745 words, about 4 min