Lesson 3 of 9
A picture that stands for many
Show on a big screenFour book pictures sit next to "Monday". Are there four books? Check the key first. The key is the note that says what one picture means.
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The rule
Not always. With a key of 2, four pictures are 8 books.
A pictograph shows counts with small pictures. Each row is one group.
The key says what one picture means. Read the key first.
A half picture is half of what one picture means. With a key of 2, half a picture is 1.
Step 1 of 4
- Monday's row, no key yet.
- The key: one picture = 2 books.
- Four pictures in the row.
- 4 × 2 = 8 books, not 4.
Example
Key: 1 picture = 2 books. A row has 3 pictures and a half.
3 whole pictures: 3 × 2 = 6 books.
The half picture: half of 2 is 1 book.
Total: 6 + 1 = 7 books.
In the lab, pick a key. Drag pictures into the row until it shows the books.
Try the lab to finish this lesson.