and hypothesis do not match properly. the question should be what are you trying to learn from the experiment? what is borax? why are you using it? what are you mixing it with?
hypothesis: should be why you think the borax will help the "slime" form. what is the "slime" made out of? what is it?
science behind it: you need to explain why the borax and glue to make "silly slime". the science behind it explains why this process happens. 