Oklahoma Academic Standards
OK.7.GM. Geometry & Measurement (GM)
7.GM.1. Develop and understand the concept of surface area and volume of rectangular prisms.
7.GM.1.1. Using a variety of tools and strategies, develop the concept that surface area of a rectangular prism with rational-valued edge lengths can be found by wrapping the figure with same-sized square units without gaps or overlap. Use appropriate measurements such as cm^2.
7.GM.2. Determine the area of trapezoids and area and perimeter of composite figures.
7.GM.2.1. Develop and use the formula to determine the area of a trapezoid to solve problems.
7.GM.3. Use reasoning with proportions and ratios to determine measurements, justify formulas, and solve real-world and mathematical problems involving circles and related geometric figures.
7.GM.3.1. Demonstrate an understanding of the proportional relationship between the diameter and circumference of a circle and that the unit rate (constant of proportionality) is π and can be approximated by rational numbers such as 22/7 and 3.14.
7.GM.3.2. Calculate the circumference and area of circles to solve problems in various contexts, in terms of π and using approximations for π.