Suppose that a student in your class wants to know why we multiply only 2 of the lengths of the sides of a rectangle to determine the rectangle’s area. After all, when we calculate the perimeter of a rectangle, we add the lengths of the 4 sides of the rectangle, so why don’t we multiply the lengths of the 4 sides to fmd the area?
- Explain to the student what perimeter and area mean, and explain why we carry out the perimeter and area calculations for a rectangle the way we do.
- Describe some problems or activities that might help the student understand the calculations.
Want to see the full answer?
Check out a sample textbook solutionChapter 12 Solutions
Mathematics for Elementary Teachers with Activities (5th Edition)
Additional Math Textbook Solutions
Calculus for Business, Economics, Life Sciences, and Social Sciences (14th Edition)
Probability and Statistics for Engineers and Scientists
Using and Understanding Mathematics: A Quantitative Reasoning Approach (6th Edition)
Calculus Volume 3
Thinking Mathematically (7th Edition)
Mathematics for the Trades: A Guided Approach (11th Edition) (What's New in Trade Math)
- A crime-scene investigator has 3.4 ounces of a sample. He needs to conduct four tests that each require 0.6 ounces of the sample, and one test that requires 0.8 ounces of the sample. How much of the sample remains after he uses it for the five tests?arrow_forwardExplain the difference between “4 times the sum of xand y” and “the sum of 4 times xand y.”arrow_forwardA ladder has 15 tapered rungs, the lengths of which increase by a common difference. The first rung is 5 inches long, and the last rung is 20 inches long. What is the sum of the lengths of the rungs?arrow_forward
- Algebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal LittellIntermediate AlgebraAlgebraISBN:9781285195728Author:Jerome E. Kaufmann, Karen L. SchwittersPublisher:Cengage LearningAlgebra for College StudentsAlgebraISBN:9781285195780Author:Jerome E. Kaufmann, Karen L. SchwittersPublisher:Cengage Learning
- Algebra and Trigonometry (MindTap Course List)AlgebraISBN:9781305071742Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage LearningHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL