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QR Challenge: Funktioner

Created using the ClassTools QR Treasure Hunt Generator

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. Hvad er forskriften for en lineær funktion?y=ax+b
2. Hvordan findes a for en lineær funktion ud fra to punkter?a=(y2-y1)/(x2-x1)
3. Hvordan findes forskriften for en funktion ud fra en datatabel?Vha regression
4. Hvordan findes skæringspunktet mellem to funktioner?Ved at løse ligningen y1=y2
5. Hvornår er en lineær funktion voksende?Når a er større end nul
6. En lineær funktion er en ret linje i hvilken form for koordinatsystem?Almindeligt
7. En eksponentiel funktion er en ret linje i hvilken form for koordinatsystem?Enkeltlogaritmisk
8. Hvad er forskriften for en eksponentiel funktion?y=ba^x
9. Hvordan findes a for en eksponentiel funktion ud fra to punkter?a=(x2-x1)'ne rod af (y2/y1)
10. Hvornår er en eksponentiel funktion voksende?Når a er større end en
11. Hvad er halveringskonstanten og hvordan regnes den?T½=log(½)/log(a)
12. Hvad er fordoblingskonstanten og hvordan regnes den?T2=log(2)/log(a)
13. Hvad er forskriften for en potensfunktion?y=bx^a
14. Hvornår er en potensfunktion voksende?Når a er større end nul
15. Når x vokser med (k-1)100% hvor meget vokser y så med?((k^a)-1)100%
16. En potensfunktion er en ret linje i hvilken form for koordinatsystem?Dobbeltlogaritmisk

 



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