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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
4. Cut them out and place them around your class / school.
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!
4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.
Question | Answer |
| 1. 1. Un árbol de 50 m de alto proyecta una sombra de 60 m de larga. Encontrar el ángulo de elevación del sol en ese momento | Sol 39º | 2. 2. Un dirigible que está volando a 800 m de altura, distingue un pueblo con un ángulo de depresión de 12°. ¿A qué distancia del pueblo se halla? | Sol 3763,7 m | 3. 3. Calcula la altura de un árbol, sabiendo que desde un punto del terreno se observa su copa bajo un ángulo de 30° y si nos acercamos 10 m, bajo un ángulo de 60°. | Sol 8,66 m | 4. 4. Calcular el área de una parcela triangular, sabiendo que dos de sus lados miden 80 m y 130 m, y forman entre ellos un ángulo de 70°. | Sol 4886,4 m2 | 5. 5. Calcular la altura del pico de una montaña, sabiendo que, en ese momento del día, el Sol incide con sus rayos sobre el suelo con un ángulo de 75º y provoca una sombra sobre el suelo de 53 metros. | Sol 197,8 m |

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