Ohio Resource Center

# Ohio's Academic Content Standards in Mathematics

 Results 1 - 7 of 7: Return to Grade 7 Indicators Ohio Standard: Geometry and Spatial Sense StandardGrade Level Indicator: (Grade: 7) 5. Apply properties of congruent or similar triangles to solve problems involving missing lengths and angle measures.
1
ORC# 3957
Resource Information
Resource Type: Lessons
Discipline: Mathematics
Professional Commentary: On a sunny day, students measure their height and the length of their shadow and use proportional reasoning to find the heights of various tall objects by measuring the lengths of the shadows of the objects. A recording sheet, questions for students, assessment options, and ideas for teacher reflection are included....
2
Fit By Design or Design To Fit: Mechanical Drafter Designer
ORC# 1282
Resource Information
Resource Type: Lessons
Discipline: Mathematics
Professional Commentary: Students use a carpenter's square and protractor to measure the sides and angles of several right triangles. To confirm their measurements, they then compute the size of selected sides and angles using (a) the Pythagorean Theorem and (b) trigonometric ratios....
3
NAEP Assessment Item, Grade 12: Find Side Length Given Similar Triangles
ORC# 2031
Resource Information
Resource Type: Assessments
Discipline: Mathematics
Professional Commentary: Students must find the length of one side of a triangle using similar triangles. They have the option of using a calculator....
4
NAEP Assessment Item, Grade 12: Use Similar Triangles
ORC# 1959
Resource Information
Resource Type: Assessments
Discipline: Mathematics
Professional Commentary: Students must find the length of a line segment in a triangle using similar triangles. They have the option of using a calculator....
5
NAEP Assessment Item, Grade 8: Find the Diagonal Measure of a TV Screen
ORC# 1921
Resource Information
Resource Type: Assessments
Discipline: Mathematics
Professional Commentary: Students find the diagonal measurement of a TV screen, given its width and height. This multiple-choice question is a sample test item used in grades 8 and 12 in the 1990 National Assessment of Educational Progress (see About NAEP)....
6
ORC# 12419
Resource Information
Resource Type: Assessments
Discipline: Mathematics