Exploring Data Visually

Context and Class Details

• Class: Year 3
• Number of Pupils: 28
• Duration: 45 minutes
• Subject: Mathematics
• Focus: Data Handling – Interpreting and Extending Bar Graphs based on previously collected data
• Curriculum: Curriculum for Excellence (CfE), Scotland

---

Curriculum Links (CfE Experiences and Outcomes)

• MTH 2-20a: I can clarify and organise ideas and information using diagrams including tables and charts.
• MTH 3-20a: I can apply my knowledge of two-way tables to interpret and organise data, and I can use this information to help solve problems.
• MTH 3-21a: Through investigation, I can generate and interpret graphs and charts, using appropriate scales and labelling.
• Literacy and English (LIT 2-26a): I can use my reading skills to understand and interpret information from a variety of sources, including charts and graphs.

---

Learning Intentions (WALT)

• WALT: Interpret and extend bar graphs from data tables to organise information clearly and make conclusions.

---

Success Criteria

• I can read and explain the information shown on a bar graph.
• I can use the data table to answer questions about the bar graph.
• I can add new data to a table and update the bar graph accordingly.
• I can talk about what the graph tells me in full sentences with support.

---

Resources Needed

• Printed copies of the initial data table and bar graph made in previous lessons (dyslexia-friendly font, colour-coded bars, clear spacing)
• Large paper or whiteboard for group bar graph extension
• Coloured pencils or markers
• Mini-whiteboards for quick pupil responses
• Visual aids: number lines, key or legend for graph
• Question cards with data interpretation and extension challenges

---

Lesson Breakdown

1. Starter Activity (5 minutes)

• Engagement:
  Quickly revisit the original data table and bar graph pupils created. Ask 2-3 volunteer pupils to share one interesting fact they can see from the graph.
• Differentiation: Support lower-achieving pupils by using simplified questions, e.g., "Which bar is tallest?" or "How many more apples than bananas?"
• Dyslexia-friendly tips: Use consistent colours for categories and highlight key numbers in bold.

---

2. Main Activity: Adding and Interpreting New Data (25 minutes)

Part 1 – Introducing new data (10 minutes):

• Teacher presents a short new data set related to the previous one — e.g., more fruits added to the collection (or new colours of cars if prior topic was transport).
• Pupils work in pairs to add this data to their existing table on mini-whiteboards.
• Discuss as a whole class how the table changes.

Part 2 – Updating the bar graph (15 minutes):

• Pupils use coloured pencils/markers to extend their bar graph on paper to include the new data.
• Teacher circulates to support, ensuring correct scaling and labelling.
• Using question cards, pupils answer interpretative questions such as:
  • "Which fruit is now the most popular?"
  • "How many more of item A than item B?"
  • "What does the graph tell you about the new data compared to the old data?"

Differentiation:

• Support: Provide partially filled tables or bar graphs for pupils needing extra help.
• Challenge: Have advanced learners calculate percentages or create a simple two-way table to compare two variables from the data.

---

3. Plenary: Reflect and Share (10 minutes)

• Pupils share their updated bar graphs and explain one new insight discovered from the updated data.
• Use a talk partner approach for confidence-building before sharing to the whole class.
• Teacher summarises key learning linked to CfE outcomes.

---

Assessment for Learning

• Observe pupil participation and reasoning during pair and group work.
• Check updated tables and bar graphs for accuracy and clarity.
• Use mini-whiteboard answers to quick-fire questions to assess understanding in real-time.
• Evaluate pupils’ ability to articulate data findings verbally or in writing using sentence starters.

---

Differentiation Strategies

Group	Strategies
Pupils with Additional Support Needs (ASN)	Provide printed templates with larger font and colour-coded sections; partner work with peer helpers; verbal instructions paired with visual prompts.
Dyslexic Learners	Use dyslexia-friendly fonts (e.g., OpenDyslexic), colour-coded charts, oral explanations, and allow use of rulers for reading lines.
Advanced Learners	Extension tasks: Create a two-way table comparing two categories; introduce basic percentage interpretations; design their own survey and gather simple data.

---

Extension Ideas

• Pupils design their own survey question relating to interests (e.g., favourite pets, sports) and collect data from the class.
• They then create tables and bar graphs from their new data, practising skills independently or in small groups.

---

Teacher Reflection Prompts

• Were all pupils able to accurately update and interpret their bar graphs?
• Which questioning strategies helped deepen understanding?
• Did the lesson accommodate diverse learning needs effectively?
• How might technology (e.g., interactive data handling apps) enhance this lesson further?

---

This lesson encourages active engagement, critical thinking, and clear communication, fully aligned with Curriculum for Excellence standards for numeracy and data handling at Level 2/3.