Teamwork and Problem Solving

Lesson Overview

Year Level: Prep (Foundation)
Subject: Mathematics
Unit: Problem Solving Adventures (Lesson 4 of 6)
Lesson Duration: 30 minutes
Class Size: 14 students
Australian Curriculum Reference:

• Mathematics – Foundation Level
  • ACMNA002: Solve simple addition and subtraction problems using a range of strategies, including counting on, using fingers, and drawing pictures.
  • ACMNA289: Use direct and indirect comparisons to decide which is longer, heavier, or holds more, and explain reasoning in everyday language.
  • ACMNA004: Sort and classify familiar objects and explain the basis for these classifications.

Learning Intentions

By the end of this lesson, students will:
🔹 Work together in small groups to solve a hands-on problem.
🔹 Share ideas and strategies to reach a common goal.
🔹 Develop their communication and collaboration skills.
🔹 Use mathematical thinking to explore solutions.

Success Criteria

✅ I can work with my group and listen to their ideas.
✅ I can explain my thinking to my peers.
✅ I can use objects, drawings, or counting to help solve the problem.
✅ I can contribute to finding a fair solution with my team.

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Lesson Structure

1. Warm-Up Activity (5 minutes) – The Mystery Bag

📦 Engagement Hook: The teacher holds a "Mystery Bag" containing different small objects (buttons, pom-poms, toy animals, etc.).

👂 Teacher says: "Inside this bag are some mystery objects. We are going to figure out how we can sort them. Can we work as a team to give ideas?"

🖐 Student Task: As a class, students take turns suggesting how to group the objects by:

• Colour
• Shape
• Size

💡 Why? This introduces students to different ways to classify and sort information – a key skill in problem-solving!

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2. Main Activity (20 minutes) – The Lost Picnic Problem

Setup (3 minutes)

🧺 The teacher sets up four small 'picnic blankets' (large sheets of paper) around the room. Each blanket represents a team space where students will work together.

🍎 Each team of 3-4 students is given a basket filled with:

• 6 toy fruits (e.g., apples, bananas, oranges)
• 4 cups
• 2 plates
• 10 counters

The Problem (2 minutes)

📜 Story prompt: "You and your friends are having a picnic, but oh no! The wind blew everything around. We need to share the food and objects fairly so everyone can enjoy the picnic. Can your team work together to solve this problem?"

Student Task (10 minutes)

💭 Step 1: Students discuss how they think the objects should be shared fairly.
👐 Step 2: They physically distribute the items, checking that everyone has what they need.
🗣 Step 3: Each group explains how they solved the problem.

🔎 Guiding Questions:

• "How do we know this is fair?"
• "What would happen if one person got all the cups?"
• "How can we use numbers to help solve this problem?"

➕ Extension Challenge: "What happens if we invite one more friend to the picnic? How do we need to change our sharing?"

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3. Reflection & Sharing (5 minutes) – Partner Talk

💬 Turn and Talk: Students pair up with someone from another group to explain how they solved the problem.

👂 Teacher Asks:

• "What worked well in your team?"
• "How did you decide who got what?"
• "What could we do differently next time?"

🌟 Final Thought: "Today, we practised working together and sharing ideas. Problem-solving is always easier when we work as a team!"

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Assessment Strategies

📋 Observations: Teacher circulates and listens to student discussions, noting how they justify decisions.
🗣 Student Reflections: Listen to partner discussions to assess understanding.
📸 Classroom Photos: Take pictures of group solutions and display them for discussion in the next lesson.

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Differentiation Strategies

🔹 Support:

• Provide students with pictures or real-life visuals of sharing situations to support understanding.
• Use physical objects for hands-on learning.

🔹 Challenge:

• Increase the number of objects to share.
• Introduce a ‘leftovers’ scenario where students must decide what happens with extra items.

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Resources Needed

✅ Mystery Bag (small objects for sorting)
✅ 4 large sheets of paper (for picnic blankets)
✅ Toy fruits, cups, plates, and counters (for group problem-solving)

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Teacher Reflection

📝 After the lesson, reflect on:

• Did students effectively communicate with their team?
• Who needed additional guidance and why?
• Were students able to explain their strategies clearly?
• What adjustments could be made for the next problem-solving lesson?

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Next Lesson Preview

📌 Next time: We will work on problem-solving when things are not fair! How do we fix unfair situations? Students will use role-playing to practise problem-solving in real-life scenarios.

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Final Thought for Teachers

This lesson blends hands-on learning with key mathematical problem-solving skills in an engaging, age-appropriate way. By using social contexts (like a picnic), students are more invested in teamwork and reasoning. Let’s make maths fun and collaborative! 🎉