Subtraction Stories Props

Overview

This 30-minute session is Lesson 8 in the unit "Math Explorations for Preschoolers." It focuses on building early mathematical understanding of subtraction through storytelling using concrete props. Preschoolers will engage in simple subtraction stories that help them visualise and physically act out subtraction concepts, supporting number sense and early problem-solving aligned with the New Zealand Curriculum Refresh.

Curriculum Links

Learning Area: Mathematics and Statistics (Years 0-3)

Reference: Mathematics and statistics in the New Zealand Curriculum Phase 1 (Years 0-3) and Te Mātaiaho Maths 0-8 (2)

Number Structure:
- Join and separate groups of objects up to a total of 10 by grouping and counting.
- Learn to find the difference between groups by grouping and counting (subtraction as 'taking away').
- Use a range of concrete materials to represent addition and subtraction situations.
Communication in Mathematics:
- Use objects and visual representations to show mathematical ideas.
- Use mathematical language: “take away,” "left," “fewer,” “how many left?”
- Encourage children to describe their thinking verbally and through actions.
Problem-solving:
- Support children to make sense of subtraction stories by acting them out or drawing them.
Key Competencies developed:
- Thinking – to make sense of subtraction situations through concrete experience.
- Using language, symbols and texts – to express subtraction stories and ideas.
- Relating to others – through shared storytelling and cooperative play.

These align with foundational learning objectives in number and operations for early years as outlined in New Zealand’s refreshed curriculum documents【1:NZC Maths Phase 1.pdf】【4:Te Mataiaho Maths 0-8 (2).pdf】.

Learning Objectives

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

Understand subtraction as ‘taking away’ objects from a group.
Use props to create and act out simple subtraction stories (e.g., "There were 5 apples, 2 were eaten, how many are left?").
Verbally communicate the subtraction story and the solution using appropriate language.
Develop early mathematical vocabulary related to subtraction.

Learning Environment and Resources

Small group (4 students) setting to allow individual support and peer interaction.
Props such as counters, small toys, fruit models, blocks, or themed items (e.g., animals, cars).
Visual aids: story cards with subtraction scenarios (optional).
Counters or manipulatives for hands-on subtraction.
Area for storytelling and acting out scenes (e.g., small table or mat on floor).

Lesson Structure

Time	Activity	Details	Curriculum Focus / Assessment
0-5m	Introduction & Warm-up	Gather children. Recap previous concepts of counting and adding objects. Introduce subtraction as “taking away.” Use simple language and examples from everyday life (e.g., snacks eaten).	Activate prior knowledge, introduce key vocabulary【1:NZC Maths Phase 1.pdf】
5-10m	Subtraction Story Demonstration	Teacher models a subtraction story using props. For example: “Here are 5 toy cars. If 2 are taken away, how many are left?” Act out removing toys physically while counting remaining.	Support visualisation and conceptual understanding【4:Te Mataiaho Maths 0-8 (2).pdf】
10-20m	Student-led Subtraction Stories (Hands-on)	Children take turns to create their own subtraction stories with props. Teacher supports by encouraging children to explain their story, act it out, and count the leftover group.	Foster active learning, language use, and understanding through physical manipulation and peer interactions
20-25m	Group Reflection and Language Building	Discuss as a group: what subtraction means, use language like “take away,” “left,” “fewer.” Use guided questions: “How many did you start with? How many took away? What’s left?”	Develop mathematical language and consolidate concept【4:Te Mataiaho Maths 0-8 (2).pdf】
25-30m	Closing and Informal Assessment	Recap key points. Praise efforts and highlight learning progress. Observe children’s ability to create and explain subtraction stories for formative assessment.	Document understanding and identify next learning steps

Detailed Activity Descriptions

Introduction & Warm-up (5 minutes)

Use familiar objects such as fruit or toys.
Ask children to count objects and discuss what happens when some are taken away.
Example: “You have 4 apples, but 1 is eaten. How many apples are left?” Use fingers and props.

Subtraction Story Demonstration (5 minutes)

Teacher acts out a subtraction story with props.
Narrate clearly: “Five bears were on the mat. Two went away to play. How many bears are still on the mat?”
Let children count the remaining bears to confirm the answer.

Student-led Subtraction Stories (10 minutes)

Children choose props to create their own stories.
Example: “I have 6 cars. I gave 3 to my friend. How many do I have now?”
Encourage children to physically take away props and count leftovers.
Ask them to tell their story to the group or teacher.

Group Reflection and Language Building (5 minutes)

Highlight subtraction vocabulary and patterns noticed.
Ask children to repeat subtraction stories using new words (e.g., “take away,” “fewer,” “left”).
Use simple drawings or show grouping with props to support explanations.

Closing and Informal Assessment (5 minutes)

Summarise the key idea that subtraction means taking away objects from a group.
Praise children’s participation and use of language.
Note observations of children’s understanding for future planning.

Assessment Strategies

Formative: Observe students' ability to act out subtraction stories and use related language.
Checklist:
- Can the child use physical objects to show subtraction?
- Can the child explain the subtraction story with some prompting?
- Does the child use subtraction vocabulary appropriately?
Record anecdotal notes or photos documenting children’s engagement and understanding. Use this to inform next lessons (e.g., more complex subtraction scenarios or introduction of subtraction symbols)【4:Te Mataiaho Maths 0-8 (2).pdf】【1:NZC Maths Phase 1.pdf】.

Teacher Tips

Ensure props are safe and easy to manipulate by young children.
Use everyday contexts familiar to children to enhance engagement (e.g., sharing snacks, toys going away).
Keep language simple and repetitive for reinforcement.
Support children with varying levels of understanding by pairing peers or using more guided questioning.
Celebrate all attempts to build confidence and positive relationships with maths.

This lesson blends hands-on learning with storytelling and communication, providing a rich, contextual foundation in subtraction that is developmentally appropriate and fully aligned with New Zealand’s refreshed curriculum for preschool learners.