Lesson Plan: Subtracting by Counting Back: Numbers up to 10 Mathematics • 1st Grade
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to subtract within 10 by counting back from the starting number.
Objectives
Students will be able to
- understand how counting back and subtracting are related,
- subtracting two numbers within 10 by counting back using number tracks,
- subtracting two numbers within 10 by counting back using models (objects and counters),
- subtracting two numbers within 10 by counting back without models,
- find the missing number in subtraction sentences,
- solve story problems involving subtracting two numbers within 10 by counting back.
Prerequisites
Students should already be familiar with
- subtracting numbers up to 5,
- reading and writing subtraction equations.
Exclusions
Students will not cover
- subtracting from numbers above 10,
- vertical subtraction,
- subtracting zero or all,
- using number lines.
