QR Challenge: Ratio and Proportion QR Code Review
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.
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. A salt truck drops 39 kilograms of salt per minute. How many grams of salt does the truck drop per second? | 650
|
2. 11. Taryn’s grandmother took the family out to dinner. If the dinner was $74 and Taryn’s dinner was 20% of the bill, how much was Taryn’s dinner? | $14.80
| 3. A trampoline costs $220 and the sales tax is 6.25%. What is the total cost of the trampoline? | 233.75
| 4. Carmen paid $10.50 for a t-shirt at the mall. It was on sale for 30% off. What was the original price before the discount? | $15
| 5. Mr. Sprockett borrows $3,500 from his bank to buy a used car. The loan has a 7.4% annual simple interest rate. If it takes Mr. Sprockett two years to pay back the loan, what is the total amount he will be paying? | $4018
| 6. Simplify 9/36 | 1/4
| 7. There are 32 slices of pizza. 10 are plain, 12 are pepperoni, and the rest are sausage.What is the ratio of plain to pepperoni? | 5/6
| 8. There are 24 hotdogs. 8 are plain, 10 have ketchup on them, and the rest have mustard. What is the ratio of plain to mustard? | 4/3
| 9. The recipe calls for 5 cups of sugar for every 2 eggs. How many cups of sugar are needed for one egg? | 2.5 cups
| 10. 8 cups of water evaporate in 4 days. How many cups of water evaporate per day? | 2 cups
| 11. It costs $46.20 for 7 pizzas. What is the cost per pizza? | $6.60
| 12. There are 576 calories in 8 servings of pie. What is the number of calories per slice? | 72
| 13. 36/m=27/21 | 28
| 14. At the copy store, 15 copies cost $.75, you need 50 copies. About how much will they cost? | 2.50
| 15. Shorts are 3 for $20.00. You want to buy 5, how much will that cost? | $33.33 |
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=A_salt_truck_drops_39_kilograms_of_salt_per_minute.__How_many_grams_of_salt_does_the_truck_drop_per_second?
Question 1 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=11. Taryn’s_grandmother_took_the_family_out_to_dinner.__If_the_dinner_was_$74_and_Taryn’s_dinner_was_20%_of_the_bill,_how_much_was_Taryn’s_dinner?
Question 2 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=A_trampoline_costs_$220_and_the_sales_tax_is_6.25%.__What_is_the_total_cost_of_the_trampoline?
Question 3 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=Carmen_paid_$10.50_for_a_t-shirt_at_the_mall.__It_was_on_sale_for_30%_off.__What_was_the_original_price_before_the_discount?
Question 4 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=Mr._Sprockett_borrows_$3,500_from_his_bank_to_buy_a_used_car.__The_loan_has_a_7.4%_annual_simple_interest_rate.__If_it_takes_Mr._Sprockett_two_years_to_pay_back_the_loan,_what_is_the_total_amount_he_will_be_paying?
Question 5 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=Simplify_9/36
Question 6 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=There_are_32_slices_of_pizza._10_are_plain,_12_are_pepperoni,_and_the_rest_are_sausage.What_is_the_ratio_of_plain_to_pepperoni?
Question 7 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=There_are_24_hotdogs._8_are_plain,_10_have_ketchup_on_them,_and_the_rest_have_mustard._What_is_the_ratio_of_plain_to_mustard?
Question 8 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=The_recipe_calls_for_5_cups_of_sugar_for_every_2_eggs._How_many_cups_of_sugar_are_needed_for_one_egg?
Question 9 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=8_cups_of_water_evaporate_in_4_days._How_many_cups_of_water_evaporate_per_day?
Question 10 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=It_costs_$46.20_for_7_pizzas._What_is_the_cost_per_pizza?
Question 11 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=There_are_576_calories_in_8_servings_of_pie._What_is_the_number_of_calories_per_slice?
Question 12 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=36/m=27/21
Question 13 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=At_the_copy_store,_15_copies_cost_$.75,_you_need_50_copies._About_how_much_will_they_cost?
Question 14 (of 15)
Ratio and Proportion QR Code Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=Shorts_are_3_for_$20.00._You_want_to_buy_5,_how_much_will_that_cost?
Question 15 (of 15)
