3. NEW LOCKERS!!!!
✤ There are 1,000 new lockers installed here at
ISB. In preparation for issuing them to
students, the Building and Grounds crew
has cleaned them and painted numbers on
all of them.
4. NEW LOCKERS!!!!
✤ There are 1,000 new lockers installed here at
ISB. In preparation for issuing them to
students, the Building and Grounds crew
has cleaned them and painted numbers on
all of them.
✤ The lockers are numbered from 1 to 1,000.
5. NEW LOCKERS!!!!
✤ There are 1,000 new lockers installed here at
ISB. In preparation for issuing them to
students, the Building and Grounds crew
has cleaned them and painted numbers on
all of them.
✤ The lockers are numbered from 1 to 1,000.
✤ Before issuing the lockers, the math teachers
thought it would be fun to make a math
problem out of the lockers for students to
solve.
7. Let’s See What Happens
✤ The first student, Student 1, runs
down the row of lockers and opens
every door.
8. Let’s See What Happens
✤ The first student, Student 1, runs
down the row of lockers and opens
every door.
9. Let’s See What Happens
✤ The first student, Student 1, runs
down the row of lockers and opens
every door.
✤ Student 2 closes the doors of
Lockers 2, 4, 6, 8, and so on to the
end of the line.
11. More students ...
✤ Student 3 changes the state of the doors of
Lockers 3, 6, 9, 12, and so on to the end of
the line. (This means the student opens
the door if it is closed and closes the door
if it is open.)
12. More students ...
✤ Student 3 changes the state of the doors of
Lockers 3, 6, 9, 12, and so on to the end of
the line. (This means the student opens
the door if it is closed and closes the door
if it is open.)
13. More students ...
✤ Student 3 changes the state of the doors of
Lockers 3, 6, 9, 12, and so on to the end of
the line. (This means the student opens
the door if it is closed and closes the door
if it is open.)
✤ Student 4 changes the state of the doors
of Lockers 4, 8, 12, 16, and so on.
15. More students ...
✤ Student 5 changes the state of
every 5th door, Student 6 changes
the state of every 6th door, and so
on, until all 1,000 students have
had a turn.
19. LET’S TRY IT!
• After completing the group task ...
head back to Grade 6 classrooms
and continue to explore which
lockers remain open ...
20. LET’S TRY IT!
• After completing the group task ...
head back to Grade 6 classrooms
and continue to explore which
lockers remain open ...
21. LET’S TRY IT!
• After completing the group task ...
head back to Grade 6 classrooms
and continue to explore which
lockers remain open ...
• but more importantly, WHY???
