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The ants go marching 2 by 2 with one left over in this lesson on remainders

Subject:

Math  

Grade:

1  

Title – Understanding Remainders
By – Catherine Hordan
Primary Subject – Math
Grade Level – 1st

Standards:

  • Counting items in a collection
  • Skip count by 5′s to 50
  • Collect and record data related to a question.
  • Display data in simple pictographs

Instructional Objectives:

  • The student will be able to put 25 ants in groups, so that there are no leftovers/remainders.

Motivation:

  • The children will march around the room just like the “bug soldiers” do in the story.

Materials:

  • A Remainder of One by Elinor Princzes
  • Bug Handout (below)

Delivery of Instruction:

  • The students will enjoy the first reading of A Remainder of One by Elinor Princzes without much interruption.
  • After the first reading, the students will be given their bug handout. They will count out 25 bugs.
  • During the second reading, the students will create two lines with their 25 ants when that part of the story is told. Ask the students if there are any leftovers/remainders. The students can draw a picture of this in their math journals and write about what they drew.
  • The students will then put their 25 bugs in 3 lines when that part of the story is told. Ask again if there are any leftovers/remainders. The students can draw a picture of this in their math journals and write about what they drew.
  • The students will then put their 25 bugs in 4 lines. Ask if their are any leftovers/remainders. The students can draw a picture in their math journals and write in words what they drew.
  • The students will put their 25 bugs in 5 lines. Ask if their are any leftovers/remainders. The students can draw a picture in their math journals and write in words what they drew.
  • These activities can be spaced out over several days. During each activity, the teacher will observe if students understand the task and give guidance if needed. The teacher will make observations as to any difficulties.

Closure:

  • The students can show their math journals of all their findings when they put their ants in groups of 2′s, 3′s, 4′s and 5′s.

Extended Practice:

  • Give the students 30 ants. Make a prediction if there will be a remainder when they put their ants in groups of 2′s, 3′s, 4′s and 5′s.

 

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