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Mathematics Class 6

Data Handling and Presentation

Tally marks, pictographs and bar graphs — make them, read them, pick one.

9 lessons · ~46 min total

Track progress — 0 of 9 lessons read 0%

Lessons in this topic

  1. 0 Start here A roadmap: collecting data, tally marks, pictographs with a key. Bar graphs with a scale, reading graphs. And choosing the right one. · 3 min You are here
  2. 1 What counts as data Data is collected facts. How you collect it changes what you can honestly say. · 5 min
  3. 2 Counting as it happens, in fives A tally mark counts something the moment it happens. Every fifth mark closes a neat group of five. · 5 min
  4. 3 A picture that stands for many A pictograph uses a picture to stand for a number. The key tells you how many. It is not always one. · 6 min
  5. 4 A bar tells you a count, if you read the scale A bar graph shows a count as height. The scale on the side tells you what each gridline is worth. · 6 min
  6. 5 Reading a graph someone else drew Answering a real question from a finished graph. No drawing needed, just careful reading. · 5 min
  7. 6 Picking the right picture Tally marks, pictographs, and bar graphs each suit a different job. Picking the right one makes data easier to read. · 5 min
  8. 7 The big picture Six ideas, tied together. · 4 min
  9. 8 Track quiz Cheat-sheet table plus a reveal quiz — one question per idea. · 7 min