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Lesson Plan: Subtracting Ones from Teen Numbers: Subtracting From Ten Mathematics
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to subtract a one-digit number from a teen number by subtracting from ten.
Objectives
Students will be able to
- subtract a one-digit number from a teen number by breaking apart the teen number model calculations with ten frames,
- write number sentences for each step of the calculation.
Prerequisites
Students should already be familiar with
- reading and writing numbers to 20,
- subtracting numbers from 10,
- using different strategies to add two single-digit numbers.
Exclusions
Students will not cover
- number lines,
- minuends larger than 19.
