Comparing Sizes Fun

Overview

A 45-minute hands-on, interactive lesson for Kindergarten (Foundation Year) students focused on understanding and using the comparative terms big, bigger, biggest through play and physical objects. This plan is aligned with the Western Australian Curriculum Foundation Year English and Mathematics learning outcomes relevant to size comparison and language development.

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Curriculum Alignment

English - Language (Foundation Year)

• Content Description: Use everyday words and phrases to describe objects, sorting and comparing familiar objects by size【5:AC9MFST01.md†Mathematics Foundation Year】.
• Language for interaction and understanding: Use and respond to familiar words and phrases, to describe things around them【12:AC9LAF01.md†Arabic Foundation Year】【5:AC9MFST01.md†Mathematics Foundation Year】.

Mathematics (Foundation Year)

• Content Description: Compare data represented by objects and images in response to given investigative questions related to size【5:AC9MFST01.md†Mathematics Foundation Year】.
• Elaborations include sorting, comparing, and role-playing activities that relate to attributes such as size.

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Learning Objectives

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

1. Understand and use the comparative language: big, bigger, biggest to describe and compare objects.
2. Physically compare sizes of real objects using visual and tactile exploration.
3. Participate cooperatively in sorting and ordering activities based on size.
4. Express their comparisons by using simple sentences (e.g., "This is bigger than that," or "This is the biggest.").

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Resources

• A set of objects/toys of varying sizes, for example:
  • Stuffed animals or dolls (small, medium, large)
  • Building blocks or boxes of three different sizes
  • Balloons or balls of different sizes
  • Paper cut-outs of circles or shapes in three sizes
• Size comparison chart/poster with words: big, bigger, biggest
• Large floor space or table for sorting and playing
• Visual aids for demonstration (picture cards showing big, bigger, biggest)
• Whiteboard or chart paper and markers

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Lesson Plan

1. Introduction & Engagement (10 minutes)

• Gather students in a circle and show them three objects clearly differing in size.
• Model with the objects:
  • "This is big." (Point to the small object)
  • "This is bigger." (Point to the medium object)
  • "This is the biggest." (Point to the largest object)
• Use clear and exaggerated expressions, repeat words together as a group.
• Ask students if they can find objects in the classroom that are big, bigger, or biggest.

Curriculum focus: Speaking and listening to familiar phrases and words about size【12:AC9LAF01.md†Arabic Foundation Year】【5:AC9MFST01.md†Mathematics Foundation Year】.

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2. Hands-On Size Comparison Exploration (20 minutes)

Activity 1: Sorting Objects by Size

• Divide students into small groups (4-5 per group).
• Provide each group with a mixed set of three sizes of objects (e.g., three different size balls).
• Ask groups to sort objects from big to biggest.
• Circulate to prompt language use:
  • "Which one is big?"
  • "Can you find something bigger?"
  • "What is the biggest in your group?"
• Encourage students to say sentences comparing sizes as they explore.

Activity 2: Size Sorting Game

• Use a prepared size comparison chart on the floor or table.
• Have students place objects in the correct column: Big, Bigger, Biggest.
• Ask volunteers to explain their choices to the class.

Curriculum focus: Sorting and comparing objects for investigative questioning and language use to describe attributes (size)【5:AC9MFST01.md†Mathematics Foundation Year】.

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3. Interactive Play & Movement (10 minutes)

• Play a "Big, Bigger, Biggest" physical movement game.
• Call out "Big!" - students stretch out wide arms to show "big."
• Call out "Bigger!" - students stretch wider or stand next to a friend to compare.
• Call out "Biggest!" - students jump or make themselves as big as possible.
• Incorporate objects: Students hold or stand next to objects representing sizes and use language learned.

Curriculum focus: Using physical movement and language to reinforce learning concepts in a multisensory way【12:AC9LAF01.md†Arabic Foundation Year】.

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4. Assessment and Reflection (5 minutes)

Observational Assessment:

• Listen to students using comparative language during activities.
• Note ability to use "big," "bigger," and "biggest" correctly in simple sentences.

Informal Peer Sharing:

• Ask each student to pick an object and say a sentence about its size compared to another object.
• Example: "My teddy is bigger than the ball."

Teacher prompts:

• Encourage sentence formation.
• Support vocabulary recall and comprehension.

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Differentiation

• For students needing support: Use picture cards and pair work to scaffold language.
• For more advanced learners: Introduce the words "small," "smaller," "smallest" for contrast.
• Use First Nations perspectives by discussing natural objects of different sizes from local environment (like leaves, rocks) if space and materials allow.

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Teacher Reflection & Extensions

• Consider integrating this lesson with a storytelling activity involving characters or animals described by size.
• Extend vocabulary with related adjectives (e.g., tall, short) in future lessons.
• Use photographs or digital resources to reinforce concepts beyond the classroom setting.

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By grounding the lesson in both the English language learning context and mathematical understanding of size comparison, and by using physical objects and movement, this plan maximises Kindergarten students' developmental readiness and engagement as aligned to the Western Australian Curriculum for Foundation Year students【5:AC9MFST01.md†Mathematics Foundation Year】【12:AC9LAF01.md†Arabic Foundation Year】.