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QR Challenge: Adding/Subtracting Fractions With Unlike Denominators

Created using the ClassTools QR Treasure Hunt Generator

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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. 1. On Saturday 3/4 of a 5th grade class went to see a new movie. If 1/4 of the class went to the afternoon session, what fraction of the class went to the evening session?2/4 or 1/2
2. 2. At a class party 4/8 of a vegetarian pizza and 1/4 of a cheese pizza were eaten. How much pizza was eaten altogether?6/8 or 3/4
3. 3. Lia ran 2/3 of a marathon. Julia ran 5/6 of a marathon. Who ran farther? How much farther?Julia ran 1/6 farther
4. 4. Liam and Sam shared a chocolate bar. Liam ate 4/12 and Sam ate 3/6. Who ate more? How much more?Sam ate 1/6 more
5. 5. Lisa bought 2/4 kilogram of bananas. She ate 1/4 kilogram of bananas on the way home. What fraction of the bananas was left?1/4 was left
6. 6. I ate 4/12 of a box of donuts. My friend ate 2/6 more than I did. What fraction of the box of donuts did we eat in all?3/3 or one whole box of donuts
7. 7. A running track is one kilometer long. If I jog for 1/6km and run for 2/3km will I complete the full distance of the track? How much will I complete?No. I will complete 5/6 of the track
8. 8. A ball of string is 6/8 of a meter long. If I use 1/8 meter of the string to tie a package how much will be left?5/8

 


Adding/Subtracting Fractions With Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=1._On_Saturday_3/4_of_a_5th_grade_class_went_to_see_a_new_movie._If_1/4_of_the_class_went_to_the_afternoon_session,_what_fraction_of_the_class_went_to_the_evening_session?

Question 1 (of 8)

 


Adding/Subtracting Fractions With Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=2._At_a_class_party_4/8_of_a_vegetarian_pizza_and_1/4_of_a_cheese_pizza_were_eaten._How_much_pizza_was_eaten_altogether?

Question 2 (of 8)

 


Adding/Subtracting Fractions With Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=3._Lia_ran_2/3_of_a_marathon._Julia_ran_5/6_of_a_marathon._Who_ran_farther?_How_much_farther?

Question 3 (of 8)

 


Adding/Subtracting Fractions With Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=4._Liam_and_Sam_shared_a_chocolate_bar._Liam_ate_4/12_and_Sam_ate_3/6._Who_ate_more?_How_much_more?

Question 4 (of 8)

 


Adding/Subtracting Fractions With Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=5._Lisa_bought_2/4_kilogram_of_bananas._She_ate_1/4_kilogram_of_bananas_on_the_way_home._What_fraction_of_the_bananas_was_left?

Question 5 (of 8)

 


Adding/Subtracting Fractions With Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=6._I_ate_4/12_of_a_box_of_donuts._My_friend_ate_2/6_more_than_I_did._What_fraction_of_the_box_of_donuts_did_we_eat_in_all?

Question 6 (of 8)

 


Adding/Subtracting Fractions With Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=7._A_running_track_is_one_kilometer_long._If_I_jog_for_1/6km_and_run_for_2/3km_will_I_complete_the_full_distance_of_the_track?_How_much_will_I_complete?

Question 7 (of 8)

 


Adding/Subtracting Fractions With Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=8._A_ball_of_string_is_6/8_of_a_meter_long._If_I_use_1/8_meter_of_the_string_to_tie_a_package_how_much_will_be_left?

Question 8 (of 8)