This activity was used with a gifted summer session. The students were rising 2nd-4th graders.
The basic idea was that students moved in small groups through 8 different caches. At each cache, they solved a puzzle that gave them one single digit number. Once they had all 8 numbers, they went to a final cache. This cache had two locks on it, each with 4 digits. They used the 8 numbers they had discovered at the other caches to open the locks and get the “treasure.” I used a pirate theme, but I actually think a secret agent theme would work even better.
- Cache Hint Cards
- One box with space for two locks (my dad made mine, but I’ve seen some toolboxes that would work)
- Two locks with 4 numbers each on them
- See the slide show below for pics of the contents of each cache:
- You will also need one of these items per group:
Students first introduced to the activity of geocaching. They were also given some things to think about when they were solving the puzzles. I used this ActivBoard flipchart:
Then in groups of 2 or 3, students moved through the different caches solving problems. When they were completely done, they had the code to open the locks on the final treasure.
Things I learned and would do differently next time:
- It would work better to have a demo lock to show in the beginning to teach students how to unlock and relock combo locks.
- All the groups for one set of students finished at the same time. There was a run to the treasure box. I think next time there will be some rules to this part.