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The Case of the Missing
Exams
Be a good detective
Math Project
Escola Sant Pau
Something mysterious happened in our school.
This morning some math exams have
disappeared!
When I arrived at the scene crime, Mrs. Marta told
me: “My Math tests have disappeared! I left them
in the class bookcase at 8:45 this morning, but
when I returned at 9:00 a.m., they were all gone!
It must have been a student!
Could you help me to find out who’s guilty?
CLUE 1 After investigating the crime scene and interrogating all
students we have three suspicious students that could
possibly be the thief.
These are students that usually arrive at the school before
9 a.m. and some times go to the classroom to study before
the class begins.
Listen to their declarations and discover who is guilty.
SUSPECT A SUSPECT B SUSPECT C
Okay, math detectives. Each suspect's story is true. But only ONE of them could have
made it to school in time to commit the crime. You heard the stories. Now, use this
bus schedule to track down the thief.
SCHOLAR BUS SCHEDULE
Depart Bus
Station
Stop At Pl. de
l’Hotel
Station
Arrive at Sant
Pau School
7:25 a.m. NO 7:40 a.m.
7:45 a.m. NO 8:00 a.m.
8:05 a.m. NO 8:20 a.m.
8:20 a.m. 8:30 – 8:45 9:00 a.m.
8:25 a.m. NO 8:40 a.m.
8:45 a.m. NO 9:00 a.m.
9:05 a.m. NO 9:20 a.m.
Answer the questions in the dossier.
Which of the three suspects could
be guilty?
CLUE 2
Discover which Student made these footprints and catch the guilty.
- Nil foot is the smallest.
- Laia has a shoe size of 35
- Lidia has a smaller foot than Marc but it is larger than Laia’s.
Knowing that the guilty's footprint is the first one on the left. Who stole the exams?
What's the guilty's name?

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The Case of The Missing Exams

  • 1. The Case of the Missing Exams Be a good detective Math Project Escola Sant Pau
  • 2. Something mysterious happened in our school. This morning some math exams have disappeared! When I arrived at the scene crime, Mrs. Marta told me: “My Math tests have disappeared! I left them in the class bookcase at 8:45 this morning, but when I returned at 9:00 a.m., they were all gone! It must have been a student! Could you help me to find out who’s guilty?
  • 3. CLUE 1 After investigating the crime scene and interrogating all students we have three suspicious students that could possibly be the thief. These are students that usually arrive at the school before 9 a.m. and some times go to the classroom to study before the class begins. Listen to their declarations and discover who is guilty. SUSPECT A SUSPECT B SUSPECT C Okay, math detectives. Each suspect's story is true. But only ONE of them could have made it to school in time to commit the crime. You heard the stories. Now, use this bus schedule to track down the thief.
  • 4. SCHOLAR BUS SCHEDULE Depart Bus Station Stop At Pl. de l’Hotel Station Arrive at Sant Pau School 7:25 a.m. NO 7:40 a.m. 7:45 a.m. NO 8:00 a.m. 8:05 a.m. NO 8:20 a.m. 8:20 a.m. 8:30 – 8:45 9:00 a.m. 8:25 a.m. NO 8:40 a.m. 8:45 a.m. NO 9:00 a.m. 9:05 a.m. NO 9:20 a.m.
  • 5. Answer the questions in the dossier. Which of the three suspects could be guilty?
  • 6. CLUE 2 Discover which Student made these footprints and catch the guilty. - Nil foot is the smallest. - Laia has a shoe size of 35 - Lidia has a smaller foot than Marc but it is larger than Laia’s. Knowing that the guilty's footprint is the first one on the left. Who stole the exams?