Helping Students Make Sense of Graphs

Hand a class a graph and watch what happens.

Some students lean in and start pointing at patterns right away. Others stare at it quietly, unsure where to begin. In our classrooms this moment is familiar. Even learners who are comfortable reading texts can feel stuck when information appears in a graph.

The issue is rarely motivation. More often, students simply haven’t been shown how to approach a graph in a systematic way.

I recently came across the article From Graph Novices to Experts: A Metacognitive Strategy to Help Students Develop Graph Literacy by Tony Matthys, Jenne VandePanne, and Stephanie Tubman, published in Science Scope in December 2025. The article offers a practical approach for teaching this skill more explicitly. At its core is something we don’t always make visible in the classroom: the thinking process behind interpreting a graph.

Although the authors designed the lesson for middle school, the core idea translates easily to adult education, particularly in GED and workforce classrooms where students regularly encounter charts, tables, and graphs.

Why Graph Literacy Deserves Attention
Graphs have become a common way to communicate information. They appear in news stories, workplace reports, public health messages, and policy discussions. Being able to interpret them is part of participating in a data-driven world.

Many students, however, develop only partial confidence with graphs. Bar graphs may feel familiar, but once the format changes—a scatterplot, a double-line graph, or a graph with an unusual axis—the task suddenly feels much harder. Students often search quickly for the answer or disengage altogether.

When students look at a graph, several things are happening at once. They need to identify what each axis represents, understand the units, notice patterns across the data, and connect those patterns to a larger idea. Without a strategy for navigating these elements, the task can quickly feel overwhelming.

Shifting the Focus: From Answers to Process
The lesson described in the article takes a slightly different approach. Instead of asking students to jump straight to interpretation, the teacher helps them slow down and notice how they are making sense of the graph.

Students annotate the graph as they work. They write directly on it, noting what different elements represent, highlighting patterns, and recording questions that arise as they read the visual information.

Over time, students use these annotations to build what the authors call a graph interpretation tool—essentially a set of steps they can follow whenever they encounter a new graph.

The process is simple but powerful. Rather than relying on the teacher to explain the graph, students begin to develop their own routine for working through it.

One framework referenced in the article summarizes the process with the acronym DATA:

• Describe what the x-axis and y-axis represent
  
  
• Address the units and range shown on each axis
  
  
• Tell the trend or overall pattern
  
  
• Analyze specific points in the data
  
  

Teachers can use this structure as a guide, though the emphasis remains on helping students construct their own version of the process.

What the Lesson Looks Like
The lesson unfolds in several phases that gradually shift responsibility from teacher modeling to student independence. The structure will feel familiar to anyone who has tried to scaffold a new skill in class.

It begins with a light entry point. Students examine a humorous graph and discuss what it appears to claim. The conversation focuses less on whether the claim is serious and more on how students figured out what the graph was communicating. This opening discussion surfaces the strategies students already use when approaching graphs.

From there, the class moves to a more substantive graph related to race results comparing horses and humans running a marathon-length course. The teacher models how to annotate the graph—pointing out axes, identifying units, and marking patterns—while students record their own notes. Working through the graph together allows students to see the thinking process unfold step by step.

Afterward, students begin drafting their personal graph interpretation tools. In small groups they compare their steps with those of their classmates, noticing similarities and gaps.

At this stage the lesson introduces an interesting element: students observe experts analyzing the same graphs. Scientists and engineers tend to follow internal routines when reading data visualizations, but those routines are rarely visible to learners. Watching expert thinking gives students additional ideas they can incorporate into their own tools.

Finally, students test their interpretation tools on new and unfamiliar graphs. Some include unusual features, such as reversed axes or more complex data sets. As students work through these graphs, they continue annotating and refining their approach.

A Simple Way to Try This with Adult Learners

This idea adapts easily to GED-level graphs.

For example, present a graph showing unemployment rates over time. Before asking any interpretation questions, invite students to annotate the graph together. Encourage them to mark the axes, identify units, circle patterns, and write questions directly on the image.

Then ask a different kind of question: “What steps did you use to figure this out?”

Those steps become the starting point for a class-generated interpretation tool. Over time, students can refine that tool and use it whenever they encounter graphs in reading passages or exam questions.

Strategies like this work best when teachers adapt them to their own classrooms.

Now, what’s your idea? How do you help students approach graphs in your classroom?
​
Happy Teaching! 
Lizelena