Here is a simple measurement experiment where the data are pooled by measuring the diameter and circumference of a round object such as lids, plates, etc. The measurement directions are on the "directions" tab of the spreadsheet below. The activity addresses measurement variation (precision) and with using a standard object such as 4 inch PVC pipe connector (see image below), the accuracy of the measurement can be assessed.

Here is the spreadsheet we developed that is set up to compute and graph data as collected. Instructors can select what materials or topics they want students to deal with. A small set of data is provided to show concepts and let you see what results are computed.