OK a pattern has 1 small square 1 3/4 on all sides middle has 5 1/4 on all sides large has 8 3/4 on all sides. I did'ent know how to do this now she wants to make the pattern 2 1/2 times bigger and show what will be the new lengths of the sides of the squares. Can somebody show me how I can do this?

I am not very good at math! Thank You

if you multiply the scale of the pattern by 2.5 you multiply every dimension by 2.5

However if by 2.5 times bigger you mean the AREA is 2.5 times bigger then you multiply every dimension by the square root of 2.5. I doubt is this is what she means.