2. Road Trip Word Problem Study Mr. DiEmidio took his family and his favorite student on a road trip to the Outer Banks in North Carolina to see the world’s largest hammock. The price of gas was $2.55 per gallon, and he used 13 gallons of gas. The cost of food for everyone on the trip was $45.84. Tolls cost $16.00. (One bridge/tunnel was 21miles long and was expensive to cross.) The trip was a total of 313 miles. What was the total cost of gas for the trip? What was the total cost of gas, food, and tolls? What was the total cost per mile for this trip? (Remember you are working with money.)

3. Tips for Solving Open-Ended Problems Make 2 columns –Put “work” on the left –Put “explanation” on the right workexplanation

4. Solving Tips Show and number each step of the work –Even/especially if the work was done in the student’s head or calculator.

5. Explanation Tips Make sure to EXPLAIN your work - not DESCRIBE it –Description: “I multiplied $2.55 and 13 and got $33.15” –Explanation “I multiplied the price of gas per gallon and the number of gallons to get the price for the gas used.”

6. Explanation Tips Make sure ALL steps are explained in words. Make sure not to use only numbers in your explanations – this will make it more difficult to describe your work.

7. Explanation Tips Use “magic words” in your explanation. These are words that help you to ‘explain’ your work rather than ‘describe’ it.

8. What are the Magic Words? To find To get To figure out To show Because Since Therefore…….

9. Explanation Tips Make sure NOT to use the words “to find THE ANSWER” The words “the answer” do not explain what the answer represents.

10. The Explanation 1) I multiplied the price of gas and the number of gallons TO GET the total cost of gas. 2) I added the cost of gas, food and tolls together TO FIND the total cost of the trip. 3) I divided the total cost of the trip by the number of miles and I FOUND the cost per mile. 4) SINCE I had many decimal places, I rounded to the hundredth BECAUSE I wanted money.

11. The Final Product Work 1) $2.55 X 13 gal = $33.15 2) $33.15 + $45.84 + $16.00 = $94.99 3) $94.99  313mi  $0.3034824281… 4) $0.30 per mile Explanation 1) I multiplied the price of gas and the number of gallons TO GET the total cost of gas. 2) I added the cost of gas, food and tolls together TO FIND the total cost of the trip. 3) I divided the total cost of the trip by the number of miles and I FOUND the cost per mile. 4) SINCE I had many decimal places, I rounded to the hundredth BECAUSE I was working with money.