Teacher Cheat Sheet — Session 6: Reading Graphs Together

Data Science for Young Minds · Grade 2 · Ages 7–8
~50 min Ages 7–8 Session 6 of 8 ND-Friendly
Session Agenda
TimeBlockWhat's Happening
0–5 HookShow Graph 1. Ask: "Tell me one thing you know just from looking." Take 5 responses.
5–13 LessonReading vocabulary: most, least, same, compare, how many more. Teacher models each with Graph 1.
13–28 Group WorkGroups of 2–3 answer 4 questions about Graph 2. Teacher circulates.
28–38 Share + DiscussClass discusses answers to Graph 2 questions. Introduce Graph 3 — students answer independently.
38–46 WorksheetStudents complete worksheet using the 3 provided graphs.
46–50 Brain Break + CloseStand-up comparison break. Preview Session 7: designing your own survey!
Reading strategy: Always point to the specific bar while asking the question. "Look at THIS bar — how tall is it? Find that number on the scale." Physical pointing bridges the visual and the question.
Materials Needed
3 bar graphs printed or projected (use worksheet graphs) Pencils Worksheets (1 per student) Sentence frame cards (optional — print from below)
Make the 3 graphs large enough to be seen from the back of the room. If projecting, keep them up during group work time.
Key Vocabulary
Most — the category with the highest bar / biggest number
Least — the category with the lowest bar / smallest number
Same — two bars that are the same height / equal numbers
Compare — look at two things side by side to find differences
How many more — find the difference by subtracting the smaller from the larger
Sentence Frames
"The most popular ___ was ___ with ___ votes."
"The least popular ___ was ___ with ___ votes."
"___ got ___ more votes than ___."
"___ and ___ got the same number of votes."
Discussion Questions + Teacher Notes
  • "Which bar is the tallest? How do you know?"
    → Students should point AND read the scale. "I can see it's the tallest, and the scale shows it reaches 8." Train them to verify visually AND numerically.
  • "How many MORE votes did ___ get than ___?"
    → This requires subtraction. Guide: "Find the number for each, then count up from the smaller to the bigger." Use fingers if needed. "8 minus 5 — how many steps from 5 to 8? 1, 2, 3 — three more."
  • "What if two bars are the same height — what does that tell us?"
    → That two things got exactly the same number of responses. This is a valid and interesting finding. "Is that surprising? Why or why not?"
  • "Can you find something interesting in this graph that I didn't ask about?"
    → Open-ended reading. Students may notice the gap between first and last place, that three categories are close together, or that the total adds to a particular number. All valid.
  • "If we added one more vote to the least popular category — would it change the graph? How?"
    → Yes — the bar would go up one grid square. Reinforces that bar height = number of votes, and any change in data changes the graph.
Three Sample Graphs for This Session
Use these three graphs for the whole session. They are also printed on the student worksheet.
Graph 1 — Favorite Pets (for teacher modeling):
Dog: 8 · Cat: 5 · Fish: 3 · Bird: 2 · Rabbit: 5
Graph 2 — Favorite Fruits (for group work):
Apple: 6 · Banana: 4 · Strawberry: 9 · Mango: 4 · Grapes: 7
Graph 3 — Ways to Get to School (independent):
Walk: 7 · Bus: 10 · Car: 8 · Bike: 3 · Other: 2
Answer key — Graph 2: Most = Strawberry (9); Least = Banana/Mango tied (4); Strawberry got 5 more than Banana; Banana and Mango are the same.
Answer key — Graph 3: Most = Bus (10); Least = Other (2); Bus got 3 more than Car; difference between Walk and Bike = 4.
Opening Hook
Show Graph 1 (Favorite Pets). Say nothing for 30 seconds — just let students look.
"Tell me one thing you know just from looking."
Take 5 responses. Don't evaluate — just collect. Then: "You just READ a bar graph. Today we'll learn the exact words for what you just did."
Brain Break
Stand-Up Comparison!
Teacher reads two categories from Graph 3: "Walk got 7. Bus got 10."
"Stand up if you think Bus got more. Now — how many MORE? Hold up that many fingers!"
Repeat with 2 more pairs from Graph 3.
Tip: Walk around to see fingers — quick formative assessment!
ND-Friendly Tips
  • Read questions aloud — Every question on the worksheet should be read aloud before students answer independently. Never assume silent reading is accessible for all.
  • Point while asking — "Look at THIS bar" + physical point. Reduces visual scanning difficulty for students who struggle with tracking.
  • Sentence frames always available — Post the four sentence frames on the board all session. Answer structure reduces language anxiety.
  • "How many more" with fingers — Count up from the smaller to the larger number using fingers. Makes subtraction concrete and accessible.
  • Groups before independent — Graph 1 = teacher models. Graph 2 = groups. Graph 3 = independent. Gradual release reduces anxiety.
Data Science for Young Minds · Grade 2 · Session 6 Cheat Sheet · sdabagh.github.io/learn/data-science