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QR Challenge: PERCENT OF CHANGE

Created using the ClassTools QR Treasure Hunt Generator

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Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

Questions / Answers (teacher reference)

Question

Answer

1. Maddie ate 1994 calories yesterday. Today she ate 1746 calories. What is the percent change?10%
2. A rose bush grew from 24 inches to 36 inches in two weeks. What is the percent change?50%
3. The 8th grade class enrollment went from 125 students to 100 students during the second semester. What is the percent change?20%
4. A 4 pound puppy grew, and weighed 10 pounds two months later. What is the percent change?150%
5. A picture that originally cost $300 sold for $400 at auction. What is the percent of change?33%
6. The water level in the lake rose from 80 feet to 90 feet after flooding. What is the percent of change?12.5%
7. A show goat weighing 100 pounds dropped to 92 pounds with diet and exercise. What is the percent change in weight?8%
8. A 27 inch television that was originally priced at $200 was on sale for $180. What was the percent change?10%
9. A teen's car fund went from $225 to $450 in one month. What was the percent of change?100%
10. A CD player regularly priced at $100 went on sale for $79. What was the percent of change in the price?21%

 


PERCENT OF CHANGE: QR Challenge

https://www.classtools.net/QR/decode.php?text=Maddie-ate-1994-calories-yesterday.--Today-she-ate-1746-calories.--What-is-the-percent-change?

Question 1 (of 10)

 


PERCENT OF CHANGE: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-rose-bush-grew-from-24-inches-to-36-inches-in-two-weeks.--What-is-the-percent-change?

Question 2 (of 10)

 


PERCENT OF CHANGE: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-8th-grade-class-enrollment-went-from-125-students-to-100-students-during-the-second-semester.--What-is-the-percent-change?

Question 3 (of 10)

 


PERCENT OF CHANGE: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-4-pound-puppy-grew,-and-weighed-10-pounds-two-months-later.--What-is-the-percent-change?

Question 4 (of 10)

 


PERCENT OF CHANGE: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-picture-that-originally-cost-$300-sold-for-$400-at-auction.--What-is-the-percent-of-change?

Question 5 (of 10)

 


PERCENT OF CHANGE: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-water-level-in-the-lake-rose-from-80-feet-to-90-feet-after-flooding.--What-is-the-percent-of-change?

Question 6 (of 10)

 


PERCENT OF CHANGE: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-show-goat-weighing-100-pounds-dropped-to-92-pounds-with-diet-and-exercise.-What-is-the-percent-change-in-weight?

Question 7 (of 10)

 


PERCENT OF CHANGE: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-27-inch-television-that-was-originally-priced-at-$200-was-on-sale-for-$180.--What-was-the-percent-change?

Question 8 (of 10)

 


PERCENT OF CHANGE: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-teen's-car-fund-went-from-$225-to-$450-in-one-month.--What-was-the-percent-of-change?

Question 9 (of 10)

 


PERCENT OF CHANGE: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-CD-player-regularly-priced-at-$100-went-on-sale-for-$79.--What-was-the-percent-of-change-in-the-price?

Question 10 (of 10)