QR Challenge: Independent and Dependent Variables
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. Question:Mary is making a cake for her father’s birthday. She wants to use one candle to represent each year he has been alive. What is the independent variable, candles or years? | years
|
2. Do 15 Jumping Jacks | 15 jumping jacks
| 3. Question:Aunt Sally is making pies for her family reunion. She wants to make sure there is at least 1 pie for every 8 people coming. What is the dependent variable, pies or people coming? | pies
| 4. Question:Sam is playing Skeeball at the arcade. The game gives you 2 tickets every time you score 100 points. Sam earned 16 tickets. What is the independent variable, tickets or points? | points
| 5. Question:Mrs. Smith uses a pedometer to count her steps when she goes for a walk. Before she leaves each day, she decides how many miles to walk.Today she walked 3 miles. What is the dependent variable, miles or steps? | steps
| 6. Question:Kristen is planning a trip to Colorado. She wants to take the route that uses the least amount of gas. A longer route means more gas is used. What is the dependent variable, gallons of gas or miles driven? | gallons of gas
| 7. Do a 30 second wall sit | wall sit
| 8. Question:Casey is saving money for a new skateboard. Each week he puts $3 for his allowance into his piggy bank. What is the independent variable, dollars saved or weeks? | weeks
| 9. Question:My dog eats 2 cups of food each day. I have to buy a new bag when she runs out of food. There are 54 cups left in the bag. What is the independent variable, cups of food or days? | days
| 10. Try to balance your pencil on your palm by the eraser | balance pencil
| 11. Question:Darren is traveling with his family to his Uncle’s house. The faster his dad drives, the sooner they will get there. What is the dependent variable, time or speed? | time
| 12. Question:Ellen and her family are picking raspberries. One pint of berries will make one jar of jelly. They want to make as much jelly as they can. What is the dependent variable, number of berries or number of jars? | jars
| 13. Question:Fred only has 2 cups of chocolate chips left. He needs 1/8 cup of chocolate chips per cookie. What is the independent variable, chocolate chips or number of cookies? | chocolate chips
| 14. Question:Hal is building a fence. He needs 8 nails (n) for each board (b) he uses in the fence. Write an equation that shows this relationship. | n=8b
| 15. Question:Lauren received 32 pieces of chocolate (c) for Valentine’s Day. She eats a piece each day (d). Write an equation to show how many pieces of chocolate she has left based on how many days it has been. | c=32-d
| 16. Balance for 20 seconds on each foot | balance |
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Question:Mary_is_making_a_cake_for_her_father’s_birthday._She_wants_to_use_one_candle_to_represent_each_year_he_has_been_alive._What_is_the_independent_variable,_candles_or_years?
Question 1 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Do_15_Jumping_Jacks
Question 2 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Question:Aunt_Sally_is_making_pies_for_her_family_reunion._She_wants_to_make_sure_there_is_at_least_1_pie_for_every_8_people_coming._What_is_the_dependent_variable,_pies_or_people_coming?
Question 3 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Question:Sam_is_playing_Skeeball_at_the_arcade._The_game_gives_you_2_tickets_every_time_you_score_100_points._Sam_earned_16_tickets._What_is_the_independent_variable,_tickets_or_points?
Question 4 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Question:Mrs._Smith_uses_a_pedometer_to_count_her_steps_when_she_goes_for_a_walk._Before_she_leaves_each_day,_she_decides_how_many_miles_to_walk.Today_she_walked_3_miles._What_is_the_dependent_variable,_miles_or_steps?
Question 5 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Question:Kristen_is_planning_a_trip_to_Colorado._She_wants_to_take_the_route_that_uses_the_least_amount_of_gas._A_longer_route_means_more_gas_is_used._What_is_the_dependent_variable,_gallons_of_gas_or_miles_driven?
Question 6 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Do_a_30_second_wall_sit
Question 7 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Question:Casey_is_saving_money_for_a_new_skateboard._Each_week_he_puts_$3_for_his_allowance_into_his_piggy_bank._What_is_the_independent_variable,_dollars_saved_or_weeks?
Question 8 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Question:My_dog_eats_2_cups_of_food_each_day._I_have_to_buy_a_new_bag_when_she_runs_out_of_food._There_are_54_cups_left_in_the_bag._What_is_the_independent_variable,_cups_of_food_or_days?
Question 9 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Try_to_balance_your_pencil_on_your_palm_by_the_eraser
Question 10 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Question:Darren_is_traveling_with_his_family_to_his_Uncle’s_house._The_faster_his_dad_drives,_the_sooner_they_will_get_there._What_is_the_dependent_variable,_time_or_speed?
Question 11 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Question:Ellen_and_her_family_are_picking_raspberries._One_pint_of_berries_will_make_one_jar_of_jelly._They_want_to_make_as_much_jelly_as_they_can._What_is_the_dependent_variable,_number_of_berries_or_number_of_jars?
Question 12 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Question:Fred_only_has_2_cups_of_chocolate_chips_left._He_needs_1/8_cup_of_chocolate_chips_per_cookie._What_is_the_independent_variable,_chocolate_chips_or_number_of_cookies?
Question 13 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Question:Hal_is_building_a_fence._He_needs_8_nails_(n)_for_each_board_(b)_he_uses_in_the_fence._Write_an_equation_that_shows_this_relationship.
Question 14 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Question:Lauren_received_32_pieces_of_chocolate_(c)_for_Valentine’s_Day._She_eats_a_piece_each_day_(d)._Write_an_equation_to_show_how_many_pieces_of_chocolate_she_has_left_based_on_how_many_days_it_has_been.
Question 15 (of 16)
Independent and Dependent Variables: QR Challenge
https://www.classtools.net/QR/decode.php?text=Balance_for_20_seconds_on_each_foot
Question 16 (of 16)
