Super Mario Bros. Tips

Fire Power While Small
To do this you need to be big or have fire power. First you must be in the last level of any world except for 8. Then you must jump on the little koopa and the hammer that retracts the bridge. You have to touch the hammer and koopa at the same time for it to work. You will start flashing like you have been hit but you will stay big. When you get a mushroom in the next world it wil make you small now go find a flower and you'll have Small Fire Power untill you die.