Unit 2: Measurement

Unit 2: Measurement

This unit emphasizes the relationships between various types of numbers.

Unit Focus

Number Sense, Concepts, and Operations

• Understand the relative size of integers, rational numbers, and real numbers.
• Understand concrete and symbolic representations of real numbers in real-world situations.
• Understand that numbers can be represented in a variety of equivalent forms, including integers, fractions, decimals, percents, scientific notation, and exponents.
• Understand and use the real number system.
• Understand and explain the effects of addition, subtraction, multiplication, and division on real numbers, including exponents, and appropriate inverse relationships.
• Select and justify alternative strategies, such as using properties of numbers, including inverse, that allow operational shortcuts for computational procedures in real-world or mathematical problems.
• Add, subtract, multiply, and divide real numbers, including exponents, using appropriate methods of computing, such as mental mathematics, paper and pencil, and calculator.
• Use estimation strategies in complex situations to predict results and to check the reasonableness of results.

Measurement

• Use concrete and graphic models to derive formulas for finding rate, distance, and time.
• Relate the concepts of measurement to similarity and proportionality in real-world situations.
• Solve real-world problems involving rated measures (miles per hour, feet per second).