In this end of the year activity, my classroom reviewed coordinate pairs and related the idea of coordinate pairs to latitude and longitude. This then led to the additional use of technology in the classroom.
Contacting the parents, I asked how many students either had a smart phone, or could get access to a smart phone for an activity at school using latitude and longitude similar to Geocaching. The response was great so I went on with the activity. I also checked the school perimeter to determine how far out our internet reached so that some students could use their ipads or kindle fire if they didn't have a phone. Then I contacted the parents once again and told them what free APP would work best for the Mac products, and the android products. (I decided on Easy GPS since you could enter latitude and longitude and it seemed fairly accurate.) Parents then downloaded the apps and sent them to school with their students the day before the activity was planned. (I also asked for parent volunteers to come and help monitor the school's surroundings for safety while the students were running in every direction.)
The day before the activity I taught the students how to enter the latitude and longitude in their phone and find a selected location. All went well and the students were ready to get started. The day of the activity I had several parents show up and students had their devices. I knew not all students would be able to bring a phone so I broke them up into teams of 4 with someone who had a device. I gave them their worksheets and sent them on their way. (I did learn an important lesson. Some students showed up with their devices only to find they did not charge them the night before. If you do something similar, make sure they have the devices fully charged.)