Add Within 50
The purpose of this lesson is for students to add within 50. Students find the value of sums within 50 in any way that makes sense to them.
Students added within 100 in grade 1. This lesson serves as a formative assessment of how students find the value of sums with larger addends. Throughout the lesson, monitor for students who look for and make use of the structure of place value to add tens to tens and ones to ones (MP7).
Tell students that, at the end of the lesson, they will be asked to reflect on the norms and they can add norms about working with a partner.
- Add within 50 in a way that makes sense to them.
- Let’s add within 50.
Materials to Gather
Materials to Copy
- How Close? Stage 3 Recording Sheet
- Create connecting cubes in towers of 10 and singles.
|Activity 1||20 min|
|Activity 2||15 min|
|Lesson Synthesis||10 min|
Teacher Reflection Questions
In what ways is the math community you are working to foster going well? What actions can you take to continue to build community?
- Number Puzzles: Addition and Subtraction (1–4), Stage 1: Within 10 (Supporting)
Print Formatted Materials
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|Student Task Statements||docx|
|Lesson Cover Page||docx|
|Cool Down||Log In|
|Teacher Guide||Log In|
|Teacher Presentation Materials||docx|