Weight Measurement Lesson

ST Name: Kym Fox  ST Number: 40036679

Class Level: 3rd Class  Date: 16/05/25

Subject: Maths  Time: 10:40  Duration: 60 minutes  No of Pupils: 20

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Strand(s)

Measures

Strand Unit(s) / Element(s)

Measuring weight

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Curriculum Alignment

This lesson plan is aligned with the Primary Mathematics Curriculum (IE) 1999, specifically referencing the Strand: Measures, Strand Unit: Measuring, and integrates competencies as outlined in the Curriculum Framework for Ireland:

• Measure, estimate, compare and order weights (Measures strand unit)
• Develop proficiency with addition and subtraction involving regrouping (Number strand, for lower ability pupils)
• Use problem-solving and reasoning skills in real-world contexts
• Competencies developed: Critical thinking, Mathematical communication, Procedural fluency

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Learning Outcomes / Content Objectives

By the end of this lesson:

1. The child should be enabled to estimate, compare, measure and record weight using appropriate instruments (using non-standard and standard units where appropriate).
2. The child should be enabled to solve weight-related word problems involving addition and subtraction of three-digit numbers with regrouping.
3. (Optional) The child should be enabled to communicate their reasoning and solutions effectively using mathematical vocabulary.

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Assessment

1. Method: Observation, workbook exercises, worksheet completion, and teacher-led questioning during regroup.
2. Assessment of: Ability to apply measuring skills, accuracy of calculations involving regrouping, problem-solving strategies.
3. To be recorded: Errors identified during regroup and feedback notes; checklists for completion of worksheets and challenge questions.

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Teacher Questioning

Lower order questions (Closed)

1. What does the scale tell us about the weight? (I)
2. Can you identify the heaviest/lightest item? (I)
3. What is the sum of 256 + 147? (D)

Higher order questions (Open)

1. How did you decide which method to use to solve this problem? (C)
2. Can you explain your reasoning when regrouping in subtraction? (C)
3. What would happen if we estimated weight incorrectly? How would that affect your answer? (C)

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Language Development Opportunities

• Use of specific vocabulary: “kilograms, grams, heavier, lighter, estimate, regroup, sum, difference”
• Encourage pupils to explain their problem-solving process aloud
• Prompt full sentence answers to deepen mathematical language use

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Literacy Development Opportunities

• Reading and interpreting word problems
• Writing numerical solutions with clear explanations
• Completing sentence stems for reflection sections such as “I solved the problem by…” or “I estimated the weight because…”

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Teaching Methodologies

Primary methodologies underlined

• Using cognitively challenging tasks
• Promoting Maths Talk
• Fostering productive disposition
• Encouraging playfulness
• Emphasising mathematical modelling

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Lesson Structure

Introduction (10 minutes)

• Stimulus: Display real objects or large pictures representing various weights (e.g., watermelon, book, bag of flour) and a large classroom scale or images of scales.
• Elicit Prior Knowledge: Ask “How do we know which item is heavier or lighter?” Review vocabulary (heavy, light, scales, kilogram).
• Share Learning Intention:
  • Today, we will review and practise measuring and comparing weights.
  • We are going to solve problems involving addition and subtraction of weights with regrouping.

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Development (40 minutes)

1. Friday Review (15 minutes)

   • Pupils complete the ‘Friday Review’ section of their homework books individually with teacher support where necessary.
   • Teacher circulates, provides hints, models solutions if pupils get stuck.

2. Problem Solving (Page 159 Maths Book) (15 minutes)

   • Teacher models the first few questions on the board, demonstrating step-by-step how to:
     • Read the problem carefully
     • Determine if it involves addition or subtraction
     • Use regrouping when required
   • Pupils independently complete remaining problems.
   • Whole class regroup: Pupils mark their answers following teacher’s guidance; clarify common mistakes.

3. Differentiation:

   • Lower ability pupils: Complete page 110 (adding and subtracting 3-digit numbers with regrouping) and follow with a worksheet focused on subtracting three-digit numbers
   • Early finishers: Work independently on a challenge worksheet with weight-related word problems displayed on the IWB.

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Conclusion (10 minutes)

• Cognitive: Review key learning points: estimation, measurement, regrouping in calculations.
• Social: Peer discussion of challenge questions; share strategies used to solve tricky problems.
• Transition: Summarise today’s learning and explain next steps for weight measurement concepts.

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Universal Design for Learning (UDL)

Pupil(s)	Reason(s)	Method(s)	Additional Comments
Visual Learners	Need concrete images to link abstract concepts	Use images, IWB visuals, real objects	Use of colour-coded steps to solve problems
Pupils with SLD	Difficulties with regrouping and multi-step problems	Extra modelling, step-by-step written guides	Lower ability worksheets as scaffolding
Gifted Pupils	Require extension and challenge	Complex word problems, independent tasks	Encourage verbal explanation of solutions

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Learning Environment and Resources

• Whole class and individual work
• Whiteboards for demonstrations and quick practice questions
• 3 Lower Ability (LA) worksheets (page 110 Maths and subtraction)
• 2 Early finisher challenge sheets (weight word problems)
• Interactive Whiteboard (IWB) with ‘Weight Challenge Questions’ displayed
• Maths books (page 159 problem solving; page 110 addition/subtraction)
• Real objects or high-quality images representing weighted items

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This lesson plan incorporates active engagement, meaningful problem-solving, and targeted differentiation while staying true to IE Curriculum standards. The focus on regrouping supports foundational numeracy competence critical at this stage, ensuring all pupils consolidate previously learned skills within relevant measuring contexts. The balance of individual and group activities promotes both independent and collaborative learning.