(such as a table, graph, Example: equation, or verbal Juan drew Rectangle A and Samantha drew description). Rectangle B. Readiness Standard 8.10A Describe the resulting effects on perimeter and area when What is the comparison between the dimensions of a shape are lengths of the sides in Rectangle A and changed proportionally. Rectangle B? Supporting Standard (The width of B is twice the width of A.) 8.14A How does the perimeter of Rectangle B Identify and apply everyday compare to the perimeter of Rectangle A? experiences, to activities in (The perimeter of B is 2 more than A.) and outside of school, with other disciplines, and with Change all dimensions and other mathematical topics. observe change in perimeter. Processing Standard 8.14B Use a problem-solving model Example: that incorporates Toby drew Rectangle C, and Geneva drew understanding the problem, Rectangle D. making a plan, carrying out the plan, and evaluating the solution for reasonableness. Processing Standard 8.15A What is the comparison between the Communicate mathematical lengths of the sides in Rectangle C and ideas using language, Rectangle D? efficient tools, appropriate (The width and length of D are twice the units, and graphical, width and length of C.) numerical, physical, or algebraic mathematical How does the perimeter of Rectangle D models. compare to the perimeter of Rectangle C? Processing Standard (The perimeter of D is the perimeter of C.) 8.16A
(such as a table, graph, equation, or verbal description). Readiness Standard 8.10A Describe the resulting effects on perimeter and area when dimensions of a shape are changed proportionally. Supporting Standard 8.14A Identify and apply everyday experiences, to activities in and outside of school, with other disciplines, and with other mathematical topics. Processing Standard 8.14B Use a problem-solving model that incorporates understanding the problem, making a plan, carrying out the plan, and evaluating the solution for reasonableness. Processing Standard 8.15A Communicate mathematical ideas using language, efficient tools, appropriate units, and graphical, numerical, physical, or algebraic mathematical models. Processing Standard 8.16A Example: Juan drew Rectangle A and Samantha drew Rectangle B. What is the comparison between the lengths of the sides in Rectangle A and Rectangle B? (The width of B is twice the width of A.) How does the perimeter of Rectangle B compare to the perimeter of Rectangle A? (The perimeter of B is 2 more than A.) Change all dimensions and observe change in perimeter. Example: Toby drew Rectangle C, and Geneva drew Rectangle D. What is the comparison between the lengths of the sides in Rectangle C and Rectangle D? (The width and length of D are twice the width and length of C.) How does the perimeter of Rectangle D compare to the perimeter of Rectangle C? (The perimeter of D is the perimeter of C.)
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