The Case of the Mysterious Mr. Jekyll

The Math Inspectors #2

by Daniel Kenney, Emily Boever

Sixth-graders Stanley, Charlotte, Gertie and Felix did more than just start a detective agency. Using their math skills and their gut instincts, they actually solved a crime the police couldn't crack. Now the Math Inspectors are called in to uncover the identity of a serial criminal named Mr. Jekyll, whose bizarre (and hilarious) pranks cross the line into vandalism. But the deeper the friends delve into the crimes, the more they realize why they were asked to help...and it wasn't because of their detective skills.

Join Stanley and his friends in another thrilling adventure of the Math Inspectors series, perfect for math lovers, math haters, and all kids ages 9-12.

Genres: Childrens, Mystery

179 pages, Kindle Edition

First published March 13, 2015

About the author

Daniel Kenney and his wife Teresa live in Omaha, Nebraska with zero cats, zero dogs, one gecko, and lots of kids. When those kids aren't driving him nuts, he writes writes books and does a lot of laundry. A lot. No, seriously, you can't possibly imagine how much laundry he does.

Reviews

[Camille · Rating 5 out of 5]

Lisez cette série !

[sincerely · Rating 5 out of 5]

Rating by 9 year old

[C-shaw]

I started this book, which looked good and seemed like a fun read, but found that I couldn't get excited about it. I'm resolving to quite books that don't suit, so I am abandoning this.

[Lynn · Rating 4 out of 5]

The Math Inspectors are back, solving mysteries in Ravensburg. This one was set around Halloween and involved vandalism being done by someone who tagged it as "Mr. Jekyll."

It was a fun mystery to solve and there were plenty of misdirects and red herrings throughout, but not as much math as in the first one. I was a bit disappointed because the first in the series was such fun to play along and use math with the kids to solve the mystery. This one had math, but it wasn't as much a part of the mystery or solution as in the first book. I was really hoping this series would continue as a kind of Numb3rs in print for middle readers. I'm still going to check out the remaining books in the series, but I am not quite as excited about the rest as I was before reading this one.

Overall, it was a fun, easy, quick read, and without much math at all, even nervous math-phobic readers need not be put off by the title/series name. I'm still recommending the series, but with the caveat that it might not be as exciting and fun in terms of math as I had hoped based on the first book.

[moxieBK · Rating 4 out of 5]

Math Inspectors 2: The Case of the Claymore Diamond [Kindle Unlimited] — Daniel Kenney, Emily Boever (18 titled chapters) December 16, 2019

Mr. Jekyll is into vandalizing items that only kids would find fun. This time the Math Inspectors are asked by the police to investigate a crime that might make more sense to youngsters than an adult. As always, word problems at the end.

I love this series. The books are quick to read and enjoyable for adults too. Nothing too deep here, just good plain fun with kids solving a crime using math. This book concentrates on the theory of line of best fit. The illustrations are in black and white, so it is compatible with a Kindle e-reader. The plot moves along at a good clip and the dialog is appropriate. The story is written in a contemporary setting.

I recommend this to younger readers (though older ones would like it too); it’s aimed at kids who love math, but especially those that don’t!

Four stars.

[Reader · Rating 5 out of 5]

My 8 year old (2nd grade) son and I enjoy reading these books in the series. We bought all of them after receiving the first one as a gift from Grandma and loving it. We are already on book 3 and this one even has me teary eyed. The books are meant for 3rd through 5th grade but a 2nd grader with good reading skills and attention can handle it. We don’t read more then 2-3 chapters a night or my son drifts which makes it hard on me (mom) since that leaves me on the edge of my seat wondering what happens next. The characters are well developed and easy to love. We highly recommend. After we finish all of the books in this series we plan to pick up his others. They are listed in the back pages of his books.

[Carla Simmons · Rating 3 out of 5]

I read lots of YA literature, but this book was not my cup of tea. Probably because the bad guys were the English nerds (my people). I didn't realize this was the second book in the series, and I have not read the first. Maybe that was why the character development was lacking. I learned a little about the two boys in the Math Inspectors, but almost nothing about the two girls in group beyond their names. And the adults were nothing more than stereotypes. I like the idea of the kids using math skills to solve the crime, and the explanation of that math was clear even if it wasn't very interesting to me. I don't think I will be recommending this one to my granddaughters.

[Rachel · Rating 1 out of 5]

I read the first two chapters that were included in book 1. This one is Halloween themed and designed to be a little spooky. I did not like the way some of the characters talked to others. One tells another to shut up. But the bigger problem was Mr. Under (who runs a hot dog stand). He insults the kids as they order calling them “big red beanpole”, a coward, and calling one “pudgy” and asking whether what she ordered was good for her diet.

After reading book 1 and these two chapters, these books are going to be a no for our family. The characters are not good role models in how they talk to others and about others.

[Audrey Light And Smell · Rating 4 out of 5]

L’Affaire du mystérieux M. Jekyll est un roman jeunesse qui allie avec brio, et non sans humour, enquête et amour des chiffres et des mathématiques. Un roman jeunesse qui devrait ravir les jeunes et moins jeunes lecteurs désirant s’initier aux enquêtes policières ou simplement passer un bon moment en compagnie d’une bande d’amis qui n’est pas au bout de ses surprises !

Avis complet sur le blog : https://lightandsmell.wordpress.com/2...

[Heather · Rating 3 out of 5]

My 9-year-old enjoyed The Case of the Mysterious Mr. Jekyll. The kids in the book call themselves the Math Inpectors, but very little math was used in solving the crimes. The police were rather ridiculous in their reasons for suspecting them and there was no innocent until proven guilty for the kids with the school board. It’s an okay book, but I wouldn’t go out of my way to read it.

[Red · Rating 2 out of 5]

Middle grade mystery.

[Lisa · Rating 4 out of 5]

9 and 10 year old loved it

[Flora Viggiano · Rating 5 out of 5]

Suspenseful, humorous, educational

This series would be a great addition to a mathematics curriculum. It is funny, the characters are charming and the kids are empowered.
This group of middle schoolers must navigate the halls filled with bullies and mean people. They are asked to solve another mystery for the local police, but it seems straightforward math is not going to solve this one. Will the gang be able to find who is behind the series of break-ins? Can English and science clubs be plotting against them?
The series even ends with some math word problems to hone student's skills.

[Trudi Jorda · Rating 3 out of 5]

No , the edition I read was not in Chinese but in English. This is the story of High School students in different groups. The Science Nerds, the English Geeks and the Math Freaks. You may remember those days of being in a group of kids like these. Well, Dr Jekyll is the prime prankster who noone knows who or why he keeps doing horrible things to others and the Math Inspectors who are a group of math nerds that have helped solve crimes for the Police in the past are now being accused of crimes they did not commit! It takes a lot of effort on the part of the Math Inspectors to clear their own good names and find out who done it! A short story with endless possibilities! Enjoy!

[Guy · Rating 5 out of 5]

We all enjoyed it

I spend a few hours a week reading with my youngest grandkids, a first grader and a third grader. Having spent a career in software development, I believe there are 3 important elements to early education-reading, writing, and arithmetic(being able to count to ten without taking your mittens off)-the Math Inspectors add a lot of fun to the subject.
Thanks Mr. Kennedy for a fun read of a good story, and a teaching tool the both the kids and I enjoyed.

[A.soorianarayanan · Rating 4 out of 5]

Enjoyed reading . Intend to read other books in the series. Read at one go because of the suspense. Liked the math references and the poems.

[Sonia Santos · Rating 5 out of 5]

Fascinating book

Great book that keeps you wanting to read more. Looking for clues to help solve the crisis is just half the fun