Do you have high school students, or do you enjoy puzzles yourself? Did you agree with my post last week, that Professor Povey’s new book looks like fun? If so, I’ve got some good news.

Oneworld Publications is offering a free copy of *Professor Povey’s Perplexing Problems* to two winners who live (or have a mailing address) in the United States. All you have to do is answer this question:

Do you have a favorite math or physics book?

### How to Enter

Scroll down to leave a comment sharing one of your favorite books, and then click over to the Rafflecopter giveaway page (or this Facebook app) to confirm your entry.

**Update:** The giveaway deadline has passed, but I’d still love to hear about your favorite book—I’m always looking for something new to read. π

**Don’t delay—the deadline for entries is Monday, September 28!**

**Remember:** This giveaway is open to entrants with a U.S. mailing address only.

And don’t forget to leave your comment down below…

Still love The Number Devil…So great for the classroom.

There are several collections of activity ideas online to go along with

The Number Devil:*Activities and journal prompts*With photos of student work*Ideas from a homeschool momI am particularly fond of

“One Two Three Infinity”and“The New World of Mr. Tompkins”. I read both as a child, and I can almost certainly credit them with a large part of my interest in mathematics.Those are both new to me, Alex. Hooray for new books to read! I wonder if our library loan system has them…

“Anno’s Mysterious Multiplying Jar”and“The Joy of x”I love both of those! For anyone who hasn’t read

The Joy of X,here are the original blog posts:*Steven Strogatz on the Elements of MathI love math picture books –

The Greedy Triangleis a great one to use with all ages. The younger grades love the story and repetition and finding the shapes, both in the book and in the world. Older grades can extend the ideas and explore limits as the number of sides grow.I agree, picture books are a

greatway to introduce math concepts to kids of all ages.I am reading

“The Adventures of Penrose the Mathematical Cat”right now with my high school students – it’s still fun!I love Penrose! And there’s a sequel, too, did you know?

Calculus: Michael Spivak; not really a high school book, but a fantastic calculus textbook!Thanks for the recommendation! I keep thinking I should go back and relearn calculus. It’s been so long since college that I’ve forgotten all but the most basic ideas.

Measurementby Paul Lockhart is a good book for Geometry.Yes, very good! I loved his video trailer for that book.

We love “Anno’s Math Games” books by Mitsumasa Anno.

Thank you for the giveaway.

On a Rafflecopter I put @Tanya Rubezhov instead of @TRubezhov as my Twitter account name by mistake. But I can’t go back and change it.

Hope it helps.

All the Anno books are fun, aren’t they?

Hm, I can’t edit the Rafflecopter entries either. I guess that’s to prevent cheating, but an editing option would help with mistakes. No matter—if you get lucky and win, I’ll remember to verify your entry with the correct @handle. π

I second Lockhart’s “Measurement,” as well as his “A Mathematician’s Lament.”

The original of Lockhart’s Lament is still available online:

*A Mathematicianβs LamentDefinitely a must-read for anyone who cares about math education.

What If?: Serious Scientific Answers to Absurd Hypothetical Questionsby Randall Munroe is the current favorite at our house. My son is even doing a series of speeches based on it for his weekly speech coop and all the kids love it.Oh, that one does sound like fun! I’ll have to look it up. My kids always hated having assigned topics for speeches, but getting to pick your own topic—and finding something that allows a bit of humor—is always good.

I really liked “Letters to a Young Mathematician” by Ian Stewart. It is a one-sided conversation between a professor and an students and she ages from secondary school through doctoral work.

I enjoyed that book, too, Eric. I posted a quote from it on my blog a few years back.

My students and I enjoy the Sir Cumference series as well as Mathterpieces.

Those are fun books, Deb. Here are a couple of math projects to go along with the Sir Cumference books: Area and Perimeter from Waltzing Matilda.

Congratulations to our giveaway winners, Brian and Deb! And thank you, everyone, for joining in the fun! I hope you all found something new to add to your Want-to-Read list. I know I did. π