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QR Challenge: Halogens

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. Compounds of fluorine are found in: Toothpaste and drinking water to prevent tooth decayQ1
2. Compounds of chlorine and bromine are found in: disinfectants and bleaches to kill bacteriaQ2
3. Iodine is important in medicine; it can be wiped onto the skin to treat and prevent infections. It’s also needed by the body for proper thyroid function Q3
4. Astatine is dangerously radioactive. It is used in medical research for example It is employed in the treatment of cancer as it is known to destroy cancer-causing cellsQ4

 


Halogens: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compounds_of_fluorine_are_found_in:_Toothpaste_and_drinking_water_to_prevent_tooth_decay

Question 1 (of 4)

 


Halogens: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compounds_of_chlorine_and_bromine_are_found_in:_disinfectants_and_bleaches_to_kill_bacteria

Question 2 (of 4)

 


Halogens: QR Challenge

https://www.classtools.net/QR/decode.php?text=Iodine_is_important_in_medicine;_it_can_be_wiped_onto_the_skin_to_treat_and_prevent_infections._It’s_also_needed_by_the_body_for_proper_thyroid_function

Question 3 (of 4)

 


Halogens: QR Challenge

https://www.classtools.net/QR/decode.php?text=Astatine_is_dangerously_radioactive._It_is_used_in_medical_research_for_example_It_is_employed_in_the_treatment_of_cancer_as_it_is_known_to_destroy_cancer-causing_cells

Question 4 (of 4)