QR Challenge: Equation & Inequality Word Problems

Created using the ClassTools QR Treasure Hunt Generator

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

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

3. Print out the QR codes.

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

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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!

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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.

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Questions / Answers (teacher reference)

Question	Answer
1. 1. A stack of 12 bricks is 27 inches high. What is the height of each brick?	27=12x x=2.25inches
2. 2. Suppose you want to buy one pair of pants and several pairs of socks. The pants cost $24.95, and the socks are $5.95 per pair. How many pairs of socks can you buy if you have $50.00 to spend?	24.95 + 5.95x = 50 x= 4 socks
3. 3. The perimeter of a pool table is 30 feet. The table is twice as long as it is wide. What is the length of the pool table?	20 feet
4. 4. Suppose a video store charges nonmembers $4 to rent each video. A store membership costs $21 and members pay only $2.50 to rent each video. For what number of videos is the cost the same?	4x=21 + 2.50x x=14
5. 5. Each of two congruent sides of an isosceles triangle is 8 inches less than twice the base. The perimeter of the triangle is 74 inches. What is the length of the base?
6. 6. This season, Nora has 125 at-bats in softball. By the end of the season she wants to have at least 140 at-bats. How many more at-bats does Nora need to reach her goal?
7. 7. You need to buy stamps to mail some letters. The stamps cost $0.34 each. What is the maximum number of stamps that you can buy with $3.84?
8. 8. Janet needs to travel 275 miles for a conference. She needs to be at the conference in no more than 5.5 hours. What is the slowest average speed that she can drive and still arrive at the conference on time?
9. 9. Suppose it costs $5 to enter a carnival. Each ride costs $1.25. You have $15 to spend at the carnival. What is the greatest number of rides that you can go on?
10. 10. The student council is sponsoring a concert as a fund raiser. Tickets are $3 for students and $5 for adults. The student council wants to raise at least $1000. If 200 students attend, how many adults must attend?
11. BONUS: Find three consecutive integers whose sum is 126.

 

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