A1 — Apply mathematical processes and communicate reasoning | Concept Lesson
Ontario Grade 9 Mathematics — Strand A: Mathematical Thinking and Connections
Step-by-step video solution
Watch video solutionThis DoAssignment.ca lesson explains the problem with a narrated, step-by-step solution for students studying Ontario Grade 9 Mathematics — Strand A: Mathematical Thinking and Connections.
Problem and lesson overview
Question:
A cell-phone plan charges a flat monthly fee of 18 dollars plus 5 cents per text message sent. A second plan charges 11 cents per text message with no flat fee. How many text messages per month make the two plans cost the same? Justify your answer fully using the four-part framework.
A1 — Apply mathematical processes and communicate reasoning | Concept Lesson
This lesson introduces the four-part justification framework — State, Set Up, Solve, Verify and Conclude — as a structured approach to applying and communicating mathematical reasoning. Students work through a linear-equation break-even problem and learn to interpret their answer in context. The lesson directly supports Ontario Grade 9 curriculum expectation A1: Apply Mathematical Processes and Communicate Reasoning.
In this lesson, you will learn to:
• Apply the four-part justification framework to present a complete,
A cell-phone plan charges a flat monthly fee of 18 dollars plus 5 cents per text message sent. A second plan charges 11 cents per text message with no flat fee. How many text messages per month make the two plans cost the same? Justify your answer fully using the four-part framework.
A1 — Apply mathematical processes and communicate reasoning | Concept Lesson
This lesson introduces the four-part justification framework — State, Set Up, Solve, Verify and Conclude — as a structured approach to applying and communicating mathematical reasoning. Students work through a linear-equation break-even problem and learn to interpret their answer in context. The lesson directly supports Ontario Grade 9 curriculum expectation A1: Apply Mathematical Processes and Communicate Reasoning.
In this lesson, you will learn to:
• Apply the four-part justification framework to present a complete,
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Ontario Grade 9 Mathematics — Strand A: Mathematical Thinking and Connections - A2 — Connect mathematics to real life, knowledge systems, and careers | Worked Example
Ontario Grade 9 Mathematics — Strand A: Mathematical Thinking and Connections