Monday with a Mad Genius (Magic Tree House Merlin Mission Series #10)

Monday with a Mad Genius (Magic Tree House Merlin Mission Series #10)


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The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!

Jack and Annie are on a mission to save Merlin from his sorrows! The brother-and-sister team travel back in the magic tree house to the period known as the Renaissance. This time, Jack and Annie will need more than a research book and a magic wand. They'll need help from one of the greatest minds of all time. What will they learn from Leonardo da Vinci?

Formerly numbered as Magic Tree House #38, the title of this book is now Magic Tree House Merlin Mission #10: Monday with a Mad Genius.

Did you know that there’s a Magic Tree House book for every kid?

Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books
Merlin Missions: More challenging adventures for the experienced reader
Super Edition: A longer and more dangerous adventure
Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures

Have more fun with Jack and Annie at!

Product Details

ISBN-13: 9780375837302
Publisher: Random House Children's Books
Publication date: 01/13/2009
Series: Magic Tree House Merlin Mission Series
Edition description: Reprint
Pages: 144
Sales rank: 89,910
Product dimensions: 5.00(w) x 7.40(h) x 0.50(d)
Lexile: 590L (what's this?)
Age Range: 7 - 10 Years

About the Author

MARY POPE OSBORNE is the author of the New York Times number one bestselling Magic Tree House series. She and her husband, writer Will Osborne (author of Magic Tree House: The Musical), live in northwestern Connecticut with their three dogs. Ms. Osborne is also the coauthor of the companion Magic Tree House Fact Trackers series with Will, and with her sister, Natalie Pope Boyce.

SAL MURDOCCA has illustrated more than 200 children's trade and text books. He is also a librettist for children's opera, a video artist, an avid runner, hiker, and bicyclist, and a teacher of children's illustration at the Parsons School of Design. Sal lives and works in New York with his wife, Nancy.


Goshen, Connecticut

Date of Birth:

May 20, 1949

Place of Birth:

Fort Sill, Oklahoma


B.A., University of North Carolina

Customer Reviews

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Monday with a Mad Genius (Magic Tree House Series #38) 4.4 out of 5 based on 0 ratings. 98 reviews.
Anonymous More than 1 year ago
I am a nine year old girl and I LOVE any book of Magic Tree House! If this book was never written, I would've never known how to read! Keep it up, Mary Pope Osborne!! -Cecilia
Anonymous More than 1 year ago
My 8 year old brother loves this series! He is currently on Dragon of the Red Dawn book #37 and will soon be on this book!!! These books are amazing because they are fun books to read and they REALLY help kids learn to read and to improve their reading. My brother and I reccomend this book to kids who love reading fun books, who have just started reading, and to kids who want/need to improve their reading! Once you read the books you'll know why so many people love them!! Enjoy! :)
Anonymous More than 1 year ago
I read this book evey day. This is a good book. I like this book so much! I love it so much I rate it 100% ( as seen on Tap to Rate.) I all so read it every night. "IT IS SO AWSOME!!!!!!!!!!!!!!!!!!!!!!!!!" BY Nicholas Steiner
EGHunter01 More than 1 year ago
"Meeting" Leonardo in his homeland was a grand adventure for a Monday. Travel back in time with Annie and Jack to the time of Leonardo and find out his "secrets" and why he enjoyed life. This was a wonderful tale and offered fascinating facts about the life of a now famous artist. For students that may not find history books fascinating this tale will maintain your attention and make you eager to read more of Mary Pope Osborne's works of fiction with history woven into the storyline. "Monday with a Mad Genius" was entertaining reading. You will want to travel in time with Jack and Annie for more of their adventures after reading this story. The other Merlin adventures are worth reading if you were delighted by this tale.
Daniel Berke More than 1 year ago
When I read this book I fell in love with it!!!
Anonymous More than 1 year ago
Greatest book ive ever read other than diary of he wimpy kid
Anonymous More than 1 year ago
This book so awesome people you have toread this book
Anonymous More than 1 year ago
I love these books!!
Anonymous More than 1 year ago
The book is amazing
Anonymous More than 1 year ago
I'm 12 years old and I still LOVE these books. I might have had 10 magic tree house books. My name is Andrew and Ihope you love these books as much as I still do. :-)
DW2109 More than 1 year ago
I love this book read 68 times can't stop reading it
Tara Harrington More than 1 year ago
Great book for kids
Payton Stephens More than 1 year ago
It must be a mad genuise who wrote it
Tracey Ayers More than 1 year ago
So good best BOOK ever.
Rebecca Paquette More than 1 year ago
The best book i'v ever read!
Brian Kimberly More than 1 year ago
mona11 More than 1 year ago
magic tree house books have alot of adventures. i think to get this book you need to use you r imaginagtion. it is not i reapt not impossible to fly. you can do anything as long as you try.
blessedbykids More than 1 year ago
son loved it.
Anonymous More than 1 year ago
Anouymous you say your eight you say your a mother you say ur twelve what are u make up ur mind
Olivia Maltrotti More than 1 year ago
This is a wonder of a book . I have a nook color and I purcashed it read it and loved! I do recommend this book for all ages. And trust me you will enjoy this book.
hunt07 More than 1 year ago
As a third grade teacher, my students check out Magic Tree House books daily. The Magic Tree House books coincide with relevant topics in the classroom. Monday with a Mad Genius is a great tie to the arts. Jack and Annie travel back in time to meet Leonardo De Vinci and learn about his many works. This is a new favorite! I like the way that author uses humor when sharing De Vinci's ideas. My students and I found this humorous. I read a few chapters aloud to my students today, even my reluctant readers listened with great intent.
Anonymous More than 1 year ago
As always my kids love these books!
Guest More than 1 year ago
Mary Pope Osborne delivers again in this fast paced magical adventure that transports us back in time to meet the most brilliant artist of all time. Jack and Annie armed with a mission and a wand, found themselves in wonderful Florence, Italy. The adventure never stops as they move from one 'so called' crisis to the next. Searching for answers that are not obvious at first, yet become very plain. I especially love the true facts about the artist thrown randomly throughout the book, it is almsot as if I were there and meeting him myself. I know young as well as old readers will enjoy this brisk fantasy that shares some insightful hints as what the term 'happiness' really means. Believe me book in hand you won't be able to put it down.
Guest More than 1 year ago
I read a book called Monday with a Mad Genius. It is book 38# in the Magic Tree House series. The series is written by Mary Pope Osborne. It is about two kids travel to Italy during the 1500¿s. There mission is to find a secret of happiness. The message that the book told me was to never give up. Jack and Annie never gave up when they were searching for the secret of happiness. This book was an amazing fantasy story combined with some history. I rate it a five star book. I think everyone who likes fantasy will love this fantastic tale.
Guest More than 1 year ago
I like how this story format had some facts and fiction at the same time. I relate to that all the way! Except, not the time travel, or the other parts that were total fiction.