QR Challenge: Reproductive QR Hunt

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

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. How many vaginas does a female kangaroo have?	3 Two to accept sperm during mating and one for birthing. Male kangaroos have a two-pronged penis.
2. When does a human fetus develop fingerprints?	at 3 months
3. How long were you a zygote?	Average is half an hour. Then the zygote divided and began forming an embryo.
4. What is the smallest cell of the human body? The largest?	Sperm. Egg.
5. True or False: Male bees “drones” die during or immediately after mating?	True. The queen bee stores the sperm from several males in her body to fertilize eggs for the rest of her life.
6. True or False: Female Black Widow spiders and Praying Mantises eat the males after mating?	Mostly false, though it is common in certain species.
7. Name 2 species (or at least 2 types of animals) that can change from male to female or vice versa.	Clownfish and some frog species. They do this to maintain proper ratios for mating.
8. Do giraffes give birth standing up or laying down?	Standing up. Which means the baby giraffe falls about 6 feet!
9. Does an octopus have live babies or lay eggs?	She lays eggs. And she guards them without eating – and barely moving- until they hatch. Then she dies.
10. How long are chipmunks pregnant?	31 days
11. True or False: Penguins mate monogamously (with only their “one true love” other) for life?	False. They only have one mate per season, and will try to find them the next season, but most often do not and choose a new mate.
12. What animal produces the world’s longest sperm?	Drosophila bifurca, a species of fruit fly. Uncoiled, their sperm is 2 inches long!
13. How many mature eggs does a human female produce in her life?	300-400. 1/month from puberty through menopause.
14. How many sperm are required to produce fraternal twins?	2, 1 to fertilize each of 2 eggs. Fraternal twins are genetically no more similar to each other than any other siblings.
15. How many sperm does it take to produce identical twins?	1. After the zygote is formed, it splits and develops into 2 separate embryos, both with exactly the same DNA!
16. What is the plural of “uterus”?	Uteri
17. What are the plurals of “octopus” and “platypus”?	Octopuses and platypuses. OR octopodes and platypodes, but not octopi and platypi.
18. An individual with the chromosomes XXY has what condition? Are they male or female?	Klinefelter’s syndrome, they are male because they have a Y chromosome.