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QR Challenge: Gingerbread house problem solving

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

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. Trey bought 2 packages of candy canes for 59 cents each. He also bought one package of chocolate snowmen for 45 cents. How much did Trey spend?1
2. Ethan collects coins. He has 84 coins in his collection. There are 14 dimes and 30 quarters. The rest are pennies. How many pennies?2
3. Three friends shared a chocolate bar. Preston ate 2/6 of the chocolate bar. Penny ate 3/6. How much chocolate bar is left?3
4. Ruth, Ross, and Rick made two cups of hot chocolate. Each cup contains five marshmallows each. How many marshmallows are in all the cups of hot chocolate?4
5. A freezer contains more than 12 snowballs but fewer than 32 snowballs. When you count the snowballs by fours, you have three left over. When you count by fives, you have two left over. How many snowballs are in this Freezer?5
6. Hot chocolate was served at the picnic. Each of 3 girls poured 9 glasses of hot chocolate. How many glasses of hot chocolate were there?6
7. The gumdrop garden measures 15 feet on each side. How many yards is that? (perimeter)7

 



Gingerbread house problem solving: QR Challenge

https://www.classtools.net/QR/decode.php?text=Gingerbread house problem solving
Q1/7:

Trey bought 2 packages of candy canes for 59 cents each. He also bought one package of chocolate snowmen for 45 cents. How much did Trey spend?&choe=UTF-8

Question 1 (of 7)

 



Gingerbread house problem solving: QR Challenge

https://www.classtools.net/QR/decode.php?text=Gingerbread house problem solving
Q2/7:

Ethan collects coins. He has 84 coins in his collection. There are 14 dimes and 30 quarters. The rest are pennies. How many pennies?&choe=UTF-8

Question 2 (of 7)

 



Gingerbread house problem solving: QR Challenge

https://www.classtools.net/QR/decode.php?text=Gingerbread house problem solving
Q3/7:

Three friends shared a chocolate bar. Preston ate 2/6 of the chocolate bar. Penny ate 3/6. How much chocolate bar is left?&choe=UTF-8

Question 3 (of 7)

 



Gingerbread house problem solving: QR Challenge

https://www.classtools.net/QR/decode.php?text=Gingerbread house problem solving
Q4/7:

Ruth, Ross, and Rick made two cups of hot chocolate. Each cup contains five marshmallows each. How many marshmallows are in all the cups of hot chocolate?&choe=UTF-8

Question 4 (of 7)

 



Gingerbread house problem solving: QR Challenge

https://www.classtools.net/QR/decode.php?text=Gingerbread house problem solving
Q5/7:

A freezer contains more than 12 snowballs but fewer than 32 snowballs. When you count the snowballs by fours, you have three left over. When you count by fives, you have two left over. How many snowballs are in this Freezer?&choe=UTF-8

Question 5 (of 7)

 



Gingerbread house problem solving: QR Challenge

https://www.classtools.net/QR/decode.php?text=Gingerbread house problem solving
Q6/7:

Hot chocolate was served at the picnic. Each of 3 girls poured 9 glasses of hot chocolate. How many glasses of hot chocolate were there?&choe=UTF-8

Question 6 (of 7)

 



Gingerbread house problem solving: QR Challenge

https://www.classtools.net/QR/decode.php?text=Gingerbread house problem solving
Q7/7:

The gumdrop garden measures 15 feet on each side. How many yards is that? (perimeter)&choe=UTF-8

Question 7 (of 7)