Lesson 5: Applications
Duration of Days: 2
Lesson Objective
Students will be able to apply unit learned skills (order of operations, fractions) to solve real world problems presented as narratives.
See Unit R guiding questions
See Unit R standards
Lesson Description
This section transitions from pure computation to contextual problem solving. Students will learn to translate English phrases into mathematical expressions and equations. Focus is placed on real-world scenarios such as calculating total costs, temperature changes, altitude differences, and basic geometric perimeters.
Purpose
The primary goal is to develop quantitative literacy. Students often struggle not with the math itself, but with "setting up" the problem. This section builds the mental framework for the "Variable Setup" and "Equation Modeling" that will dominate the rest of the Elementary Algebra course.
DOK Level: 3 (Strategic Thinking)
While the operations used are simple (addition, subtraction, etc.), the student must perform the higher-level task of analyzing a text-based situation, selecting the appropriate mathematical strategy, and verifying if their answer makes sense in the given context.
Class and online work
Use practice problems 9-17 on pages 24-26 to assess students' understanding of the lesson concepts