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Exit presentation

Data Handling and Presentation

The big picture

Ask the whole group. Mark each answer. Check the key. Read the scale.

Data Handling and Presentation — the whole chapter on one screen
IdeaRemember
What is dataCollected facts, not a guess. A small group can differ from the whole class.
Tally marksOne stroke each time. Every fifth stroke closes a group of five.
PictographsA picture stands for a number. Check the key.
Bar graphsBar length = count ÷ scale. Read the scale first.
Reading graphsFind the bars the question names. Then compare or add.
ChoosingTally to count live. Pictograph for small counts. Bar graph for big numbers.

Open Chapter 4, Data Handling and Presentation, in your book. You have tried every idea in it.

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This track

  1. 0 Start here
  2. 1 What counts as data
  3. 2 Counting as it happens, in fives
  4. 3 A picture that stands for many
  5. 4 A bar tells you a count, if you read the scale
  6. 5 Reading a graph someone else drew
  7. 6 Picking the right picture
  8. 7 The big picture
  9. 8 Track quiz

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