Lesson: Counting Forward and Backward within 120 Mathematics • 1st Grade

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In this lesson, we will learn how to count to 120 in ones from any starting number and complete the missing numbers in a count sequence.

Lesson Plan

Students will be able to

  • count forward and backward by ones through 100 up to 120,
  • find missing numbers in sequences,
  • solve simple addition and subtraction problems by counting forward and backward.

Lesson Playlist

  • Finding the Missing Two- or Three-Digit Numbers on a Number Line
    00:36
  • Counting Numbers up to 999
    00:33
  • Counting Numbers up to 999 within a Given Range
    01:10

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