# Print

## 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.

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.

### Question

1. Kareem is making fudge. He uses 7 ounces of marshmallow crème for each batch. Write an expression that can be used to find the number of ounces of marshmallow crème Kareem needs to make b batches.answer
2. Does the equation that follows show the commutative property, associative property, or distributive property? 9 x (2 x 3) = (9 x 2) x 3answer
3. How many meters are equivalent to 15 kilometers if 1kilometer =1,000 meters?answer
4. Solve: 1/8 + 4/8 + 2/8answer
5. Does the equation that follows show the commutative property, associative property, or distributive property? 3 (4 + 8) = (3 x 4) + (3 x 8)answer
6. Does the equation that follows show the commutative property, associative property, or distributive property? 8 + 9 + 7 + 4 + 12 = 4 + 12 + 8 + 9 + 7answer
7. True or False? The equation below shows the commutative property. 3 x 7 + 9 = 9 + 7 x 3answer
8. There are 604,800 seconds in one week. How is the number 604,800 written in words?answer
9. Solve: ½ - 2/5answer
10. Write 10/8 as a mixed number. Reduce to lowest terms.answer
11. Elisa is making candles. She needs 5 ounces of wax for each candle. She has 25 ounces of wax. How many candles can she make?answer
12. There are 28 students riding the bus. Twelve of the students are girls. How many boys are riding the bus?answer
13. Zeke bought 1/3 of a pound of red licorice pieces and ¼ of a pound of black licorice pieces. Altogether how much licorice did Zeke buy?answer
14. Tarik had 18 pieces of gum. Jamia had 8 pieces. How many more pieces of gum did Tarik have than Jamia?answer
15. The school bus travels 5 miles on one gallon of gas. How many gallons of gas will the bus use its 20-mile route?answer
16. Write an expression for the following statement: LeShawn has c pieces of candy. Justin has 8 more pieces of candy than LeShawn.answer
17. Exactly how many minutes are equivalent to 11 hours if 1 hour = 60 minutes?answer
18. Write a definition for a right angle. Draw an example of a right angle.answer
19. Convert 8 4/7 to an improper fraction.answer
20. Which unit of measure would be best to measure the distance between your school and downtown Nashville, a centimeter, a kilometer, or a gallon?answer

### 4th Grade Math Review: QR Challenge

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