1.4 scope of the study.
Divide the research into 2 steps.
The experiment study 1 type of cloth used storage equipment is portable.
The independent variable, the type of fabric.
The ability to use variables.
Control variable shape, number of devices.
The experiment study of the shape of storage devices such 2 Portable made out of jeans.
Independent variable kinds of shapes to make the bag.
The ability to use variables.
Control variable types of fabric, the number of devices.