can't get my screen back to normal mode. Its locked in very large screen an I can't even getto thebutonsto open withmycode

Try tapping with four fingers

YYou only need to tap with 3 fingers. Then go to settings, general, accessibility and turn off zoom.

Double tap with three fingers. The screen should return to normal then turn off zoom. If doubble tapping the screen doesn't return it to normal place three fingers on the screen to slide the screen around so you can enter your passcode. If your screen is still frozen in zoom try a reset. Press and hold both the home and power buttons until the Apple logo appears. Release both fingers. Let your iPad start on it's own.