Lesson 1: Reading Graphs

About 30 minutes — Activity-based lesson

What You Will Learn

This lesson covers:

How to read a bar chart: which bar is tallest? shortest? equal?
How to read a pictograph: count pictures and multiply by the key
How to read a dot plot: where are the clusters? gaps? outliers?
Practice: answer questions about 5 different graphs

How to read a bar chart: which bar is tallest? shortest? equal?

This section covers the key ideas about how to read a bar chart: which bar is tallest? shortest? equal?. Discuss with your group or family and explore the concepts together.

How to read a pictograph: count pictures and multiply by the key

This section covers the key ideas about how to read a pictograph: count pictures and multiply by the key. Discuss with your group or family and explore the concepts together.

How to read a dot plot: where are the clusters? gaps? outliers?

This section covers the key ideas about how to read a dot plot: where are the clusters? gaps? outliers?. Discuss with your group or family and explore the concepts together.

Practice: answer questions about 5 different graphs

This section covers the key ideas about practice: answer questions about 5 different graphs. Discuss with your group or family and explore the concepts together.

Check Your Understanding

1. How do you read a bar chart?

Answer: Look at the title to know the topic, read the axis labels, and compare bar heights. The tallest bar is the most common category; the shortest is the least common.

2. How do you read a pictograph?

Answer: Check the key first (what does each picture represent?). Count the pictures in each row and multiply by the key value to get the actual number.

3. How do you read a dot plot?

Answer: Look at where dots cluster (most common values), where there are gaps (uncommon values), and any outliers (values far from the rest).

4. What should you always check first when reading any graph?

Answer: The title and axis labels. These tell you what the graph is about and what the numbers mean.

Key Takeaways

How to read a bar chart: which bar is tallest? shortest? equal?
How to read a pictograph: count pictures and multiply by the key
How to read a dot plot: where are the clusters? gaps? outliers?
Practice: answer questions about 5 different graphs

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Continue to Lesson 2: Finding Patterns in Data

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