I know that this idea was not originally mine. I have searched online for the original owner but cannot find the source, so I apologize for not giving credit where it is due. I took the original source and reworked it for my purposes. This resource has seven centres for static electricity. I have an instruction sheet for each centre as well as a student booklet. My first unit in grade 6 was a science skills unit. In that unit we focus a lot on the scientific method, including how to properly write a problem and hypothesis and how to identify independent, dependent, and controlled variables. These centres do not include a section for the variables, but that can easily be added. You can access the documents here.
