Campbell's really into time travel right now - this book is just the right thing for him.

One of our classic family favorites. Read aloud laughter!

This is a fun story about two boys who have an improbable but hilarious adventure in the Middle Ages via a time machine. I would have loved this book at age 10, and my sons would have, too. It's refreshing to read a silly story that often makes you smile and laugh out loud. Sadly, it probably wouldn't be published in today's children's book market, but it's the perfect kind of book to encourage a reluctant reader (especially boys) to enjoy fiction!

One of my all-time favorites!

this is a awesome book im still reading it but it is good so far!!!!:)

Laugh out loud funny! Easy read, great if you need a quick get away!

so much nostalgia

i remember reading this book in Mr. Earl's class...

I think I read this book twenty times, I love time travel books!

I love this book, I read an excerpt in a textbook in school and had to check the book out. I've read it several times since then and its an old favorite.

Read this a long time ago. I remember enjoying it a lot.