Problem of the Week

1. Problem of the Week Mrs. Amaya 7th Grade Math and Science

2. P.O.W #1 – Should I Join the Club?Due Date: Friday, January 10th • At Mr. Vid’s Video Rentals you can join his VID Club for a monthly membership fee of $30. Club members pay only $.85 to rent each movie. If you are not a member of the VID Club, the movies rent for $2.25 each. How many videos would you have to rent each month to make a membership worth the investment? Source: “Problem of the Week – A Fresh Approach to Problem-Solving” by Linda Griffin and Glenda Demoss

3. POW #2 – Flipping CoinsDue Date: January 17th • Place six coins on the table in the arrangement shown in the first row below. Your task is to produce the second arrangement shown by flipping coins according to this rule: You must flip two adjacent coins at a time. • What is the fewest # of flips needed to make the change?

4. POW #2 cont’d • Start like this: • End like this: Source: “Problem of the Week – A Fresh Approach to Problem-Solving” by Linda Griffin and Glenda Demoss

5. POW #3 – Bikes, Trikes, and MoreDue Date – January 24th • At Irv’s Cycle Rental Shop, Irv rents all kinds of cycles: unicycles, tandem bikes, regular bikes, and even tricycles for little kids. He parks all the cycles in front of his shop with a helmet for each rider strapped to the cycles. This morning Irv counted 57 helmets and 115 wheels parked in front of his store. He knows he has an equal number of unicycles and tandem bikes. He also knows that he has 32 regular bikes. How many unicycles, tandem bikes, and tricycles does Irv have? • Unicycles – • Tandem bikes – • Tricycles - Source: “Problem of the Week – A Fresh Approach to Problem-Solving” by Linda Griffin and Glenda Demoss