Grade 7 - Shape and Space
Standard 7.SS.1 - Practice calculating the perimeter and radius of a circle based on the dimensions of a quarter circle.
Included Skills: Geometry
Demonstrate an understanding of circles by: • describing the relationships among radius, diameter and circumference • relating circumference to pi • determining the sum of the central angles • constructing circles with a given radius or diameter • solving problems involving the radii, diameters and circumferences of circles. • Achievement Indicators: - 7SS1.1 Illustrate and explain that the diameter is twice the radius in a given circle. - 7SS1.2 Draw a circle with a given radius or diameter, with and without a compass. - 7SS1.3 Illustrate and explain that the circumference is approximately three times the diameter in a given circle. - 7SS1.4 Explain that, for all circles, pi is the ratio of the circumference to the diameter (C/d) and its value is approximately 3.14. - 7SS1.5 Solve a given contextual problem involving circles. - 7SS1.6 Explain, using an illustration, that the sum of the central angles of a circle is 360°.