Students will actively estimate and calculate values (ex. the temperature of water) to determine percent error. This is a great active lesson since kids will be moving from station to station to complete their data collection, ideally in small groups.
Aside from simply learning to calculate percent error, students will also learn the value of accurate data collection.
Paper "Olympic Medals" are also included to award the students at the end whose estimates were closest to their actual value. I strongly recommend downloading the Olympic theme for that real "award ceremony feel".