when Jeremy saw Mr. Winaki, the teacher said, “The amount of money in my wallet
is more than $10, but less than $20. How much do I have?” Jeremy remembers
talking about inequalities in math class and thinks that the answer may have something
to do with that idea. In the Math Toolbox, we helped Jeremy solve Mr. Winaki’s
riddle. Now, Jeremy needs help in writing a brainteaser to stump Mr. Winaki.
original riddle needs to be a real world problem that has an answer of more
than 19 and less than 41.
about possible real world situations that might have an answer of more than 19
and less than 41. List three ideas for your original riddle.
three important words from the ideas you listed above. Use a thesaurus to look
up synonyms of the words. Remember, Mr. Winaki is an English teacher. He will
like your use of interesting new words. Record your findings in the chart
3. Select an idea
your list of ideas, select one about which to write a riddle. Remember, your riddle should have an answerof more than 19 and less than 41. Use one of the synonyms you found to make
your writing more exciting.
4. Provide a possible
the Math Toolbox section of our lesson, we chose a possible solution to Mr.
Winaki’s riddle. Choose a possible
number that answers your riddle.
5. Writing Inequalities
a. Write an inequality comparing it to 19.
b. Choose the same value as a possible solution
and write an inequality comparing it to 41.
c. Write an inequality that shows the
relationship between all three numbers?
d. Represent the inequality algebraically.