Counting with Cut and Paste

Overview

This 60-minute lesson helps 1st grade students develop key early numeracy skills aligned with Saskatchewan outcome N1.3 by exploring counting sets using parts, equal grouping, and the counting-on strategy. By incorporating a tactile cut-and-paste activity, students will engage physically and visually to deepen their understanding that the last number said when counting indicates "how many."

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Curriculum Connections

Saskatchewan Mathematics Curriculum (Grade 1):

• N1.3: Demonstrate an understanding of counting by:
  • indicating that the last number said identifies "how many"
  • showing that any set has only one count using the counting-on strategy
  • using parts or equal groups to count sets

Relevant Canadian Educational Standards and Approaches:

• Focus on concrete-representational-abstract (CRA) learning sequence
• Emphasis on manipulatives and multisensory strategies to support diverse learners
• Supports numeracy development within holistic, collaborative learning environments
• Encourages mathematical communication and verbalization for conceptual understanding

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Learning Objectives

By the end of this lesson, students will be able to:

1. Use cut-out pictures to create sets of objects arranged in equal groups and parts.
2. Count items in groups aloud, applying the counting-on strategy to find the total.
3. Demonstrate comprehension that the last number said when counting represents the total number of items.
4. Use mathematical vocabulary such as “equal groups,” “parts of a set,” “count,” and “total.”
5. Collaborate and communicate to explain counting methods with peers and teacher.

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Materials

• Pre-printed sheets with small pictures (e.g., apples, stars, cats) sized for cutting (~1–2 cm each), approximately 40 pictures per student divided into groups of 2 to 5
• Blank worksheets with 4 large labelled boxes for “Group 1,” “Group 2,” “Parts of a set,” and “Total”
• Child-safe scissors
• Glue sticks
• “Counting-on” number line poster visible to class (0 to 20)
• Whiteboard and markers
• Sticky notes or small cards with counting-on prompts (e.g., “Start at 3, count 2 more”)

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Lesson Sequence

1. Introduction (10 minutes)

• Begin by gathering students on the carpet or at their desks. Show a small group of objects (e.g., 3 apples). Ask, “How many apples do I have here?”
• Model counting aloud, emphasizing that the last number said tells you the total amount — “one, two, three. Three apples!”
• Introduce the concept that we can count objects in parts or groups to make it easier. Demonstrate counting part of a group and then counting on (e.g., “I see 2 apples, then I count two more: three, four. Total = four apples.”)
• Use the number line poster to illustrate counting on visually.
• Highlight the vocabulary: parts, equal groups, total.

2. Guided Practice – Cut and Paste Activity (15 minutes)

• Hand out scissors, glue sticks, cut-out sheets, and blank worksheets.
• Instructions:
  • Cut out the small pictures carefully. Begin by cutting out one set (e.g., 4 apples, 2 stars).
  • Paste the pictures into boxes on the worksheet labelled “Group 1” and “Group 2,” arranging them as equal groups (e.g., 2 apples in each group).
  • Next, create a “Parts of a set” box where students paste pictures split into unequal parts (e.g., 3 cats and 2 cats making 5 cats total).
  • In the “Total” box, paste all combined pictures from the parts/groups together.
• Support students to count each group aloud, using counting-on: “I see 3 cats, now I add 2 more cats… three, four, five! Five cats total.”
• Teacher circulates, listens to counting, and offers verbal prompts to reinforce that the last number counted is the total.

3. Collaborative Counting Practice (15 minutes)

• Pair students (or groups of 3) by proximity. Each student shares their worksheet with their partner(s).
• Take turns counting groups aloud to each other using counting-on.
• Encourage students to explain what they did: “I counted the first group, then I counted on the second group, and the last number is the total.”
• Teacher facilitates the conversation by asking probing questions: “How many in this group? How many do we add? What number do we say last?”
• Use sticky notes with prompts on groups to scaffold counting-on ("Start at 4, add 3").

4. Independent Practice and Reflection (15 minutes)

• Students create one new set independently on a new blank sheet using cut-out pictures. They decide how to organise groups or parts.
• They glue pictures and write (or dictate to teacher) the total number counted.
• Complete a short reflection prompt (circle or draw): “The last number I say when counting shows me how many.”
• Invite volunteers to share their sets and counting strategies aloud with the class.

5. Conclusion and Review (5 minutes)

• Recap the key ideas:
  • Counting in parts and equal groups helps us find the total more easily.
  • The last number we say when counting is the total.
  • Counting on means starting from a number you already know and adding more.
• End with a quick counting game where the teacher says a number, then students count on aloud a few more (e.g., “Start at 5, count 3 more!”).

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Assessment and Differentiation

Formative Assessment

• Observe students as they cut, paste, and count aloud.
• Listen for correct verbal use of counting-on and total identification.
• Use checklists to note if a student demonstrates understanding of parts/equal groups and counting-on.
• Use partner conversation to gauge mathematical language usage.

Differentiation Strategies

• Provide additional visual number lines or finger counting supports for students needing concrete aids.
• Use larger pictures for fine motor support.
• Pair students strategically for peer scaffolding.
• Challenge advanced students to create sets with more parts or more groups or to write simple addition sentences.

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Extensions and Home Connections

• Suggest parents play counting games with daily objects, encouraging counting-on and identifying totals.
• Provide a take-home cut-out sheet for similar practice with familiar items (e.g., toys, fruits).
• Encourage students to explain their counting strategies to family members.

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Teacher Reflection Notes

• Monitor if students clearly grasp that the last number said equals how many.
• Check if cutting and pasting supports engagement and understanding, or if motor skills interfere with math learning.
• Consider incorporating digital cut and paste games with tablets for future lessons to diversify media modalities.

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By integrating tactile materials with scaffolded verbal counting strategies linked to Saskatchewan's math outcomes, this lesson plan nurtures deep numeracy understanding in a hands-on, age-appropriate manner that echoes Canadian best practices and makes learning fun and memorable for young learners.