Jumping Through Time

I once read a book called THE PAST IS GONE. It was full of humor and excitement. In the book, a kid from the future named Theodore Pine Four suddenly appears in someones bedroom. His Jumpman, a toy that kids from the future play with that allows them to travel through time, is broken. The creator of the Jumpman accidentally switches the remotes of two different Jumpman models and now Theodore is stuck in the past. Some kids agree to help him and they have a wild adventure travelling through time. They also have to take him to school with them. This book is really funny because Theodore doesn't understand anything from the past. For example; he thinks that riding a bike is a form of torture. If you like funny, wacky science-fiction books, then this is for you.