In a previous lesson, students learned to tell and write time to the nearest minute. In this lesson, students reason about elapsed time using any representation that makes sense to them, such as the number line, tables, equations, and words. Students consider a variety of representations so that they can make connections and possibly use them in the next lesson (MP2).
- Action and Expression
Activity 1: Time at the Bus Stop
- Solve problems involving addition and subtraction of time intervals in minutes in a way that makes sense to them.
- Let’s solve problems involving time.
|Activity 1||25 min|
|Activity 2||10 min|
|Lesson Synthesis||10 min|
Teacher Reflection Questions
How did you see students applying familiar representations to new situations in this lesson? How will you make use of their ideas as they solve problems involving time intervals in a future lesson?
- Number Puzzles: Addition and Subtraction (1–4), Stage 5: Within 1,000 (Supporting)
- Target Numbers (1–5), Stage 7: Subtract Hundreds, Tens, or Ones (Supporting)