My peds clinical was a while ago, but I do work with peds patients so I'll give you my best advice.
Speak softly to these children. They are in the hospital, and scared.
Medical Terms and kids dont mix.
Instead of saying "I'm going to take your blood pressure" say " I'm going to measure your muscles now!"
IV's are the scariest thing for a kid- but an IV is just a straw and its giving your hand a drink
Isnt that silly? (most kids i've dealt with got a kick out of this..and usually stopped crying)
To listen to bowel sounds/heart sounds/etc - What do you think your tummy/heart is going to tell me?? Then I normally proceed to make up things that its telling me. Silly things mind you.
Get down to their level. Nothing is scarier then a 5 foot 6inch or so person standing over a 3foot little kid.
Sometimes you need to take out a little more time for a peds patient..patience is key..
If you like kids, I think you'll love your peds rotation. You arent hurting kids, you're making them feel better. Even if it does hurt a little bit..
My last word of advice: Carry around some cute bandaids with you- spiderman, care bears, etc. Bandaids make everything so much better
Most of all- be yourself
Enjoy it, and you will learn lots.
Its amazing what a small child can teach an adult.
If you have any questions- dont hestitate to ask!