How can i unlocked my "Android Galaxy Tab 3" without internet connection

[Android Question]

i have an "Android Galaxy Tab 3" and putted a pattern lock on it, My little sister tried to open it then got many attemps, ended me up trying to unlock it. it says they need my username(email) and Password in google?i entered the right details of my acc. but when i clicked "Sign In" the password got erased and didn't sign in..my internet connection to Wi-Fi was turned off before that happens, how do i get the tablet to be unlocked again?

 

[Unforgiven]

Use this tutorial on getting back into your device.
http://androidforums.com/faqs/685025-lost-phone-locked-out-faq.html