GPs are technical assignments that require you to manipulate, calculate, and present data in very specific ways using the features and functions of Microsoft Access and Microsoft Excel. If you have ever taken a computer science class, they are similar to programming projects in terms of how rigorously they are evaluated and graded.
There are 9 graded projects in total - 4 that cover topics in Access, and 5 for topics in Excel. It is very important that you use the GPs to thoroughly master the lab material and prepare for the practical exams.