Headline Story
Extending the Number Line, #1
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Introduction
Read the Headline Story to the students. Encourage them to use logical reasoning to draw conclusions about the coins.
Headline Story
Kyra, Martin, and Joel each have some coins. Kyra’s coins have a value that is a multiple of 6¢. Martin has a multiple of 7¢. Together, the three have 34¢. How much might they each have?
Possible student responses
- All of the children have at least one coin.
- Kyra might have 6¢, 12¢, 18¢, 24¢, or 30¢.
- Martin might have 7¢, 14¢, 21¢, or 28¢.
- If Kyra has 30¢, then Martin would not have any coins, so Kyra must not have 30¢.
- If Martin has 28¢, then Kyra would have 6¢ and Joel would not have any coins, so Martin must not have 28¢.
- If Kyra has 18¢ and Martin has 7¢, then Joel would have 9¢.
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