I’m making the most of the $2 I spent on this recent Goodwill find. The Giant Book of Hard-to-Solve Mind Puzzles is out-of-print which makes used copies from Amazon VERY expensive.
If you happen upon a copy of this book at a thrift store or used book shop, it’s definitely worth picking up a copy! The Is It Possible Divisibility Rules Puzzle is the third puzzle I’ve created for my classroom based on this book.
When I ran across this divisibility rules puzzle, I knew that it would make a lovely magnetic puzzle to post on my dry erase board for the upcoming year. I’m making it my goal to post a new puzzle on the board each week.
I don’t have space for a puzzle table like I had in the past at my old school (that’s what happens when you have 30 students crammed into a classroom), so I’ve found that the best way to engage students in puzzles is to make them vertical by posting them on the dry erase board.
The board is magnetic, and I’ve found I get the most engagement from students when the puzzles involve magnetic pieces that can be manipulated.
Here’s the task. Is it possible to use the digits 1, 2, 3, 4, 5, 6, 7, 8, 9, and 0 to construct a ten-digit number divisible (without a remainder) by all the numbers from 2 to 18?
I plan on putting disc magnets on the back of each digit. My magnets are currently locked away in my classroom, so that will probably have to wait until August.
Free Download of Is It Possible Divisibility Rules Puzzle
Want to play along at home or with your own students?
I intentionally do not share solutions to the puzzles I feature on my website because I strive to provide learning experiences for my students that are not google-able. I would like other teachers to be able to use these puzzles in their classrooms as well without the solutions being easily found on the Internet.
However, I do recognize that us teachers are busy people and sometimes need to quickly reference an answer key to see if a student has solved a puzzle correctly or to see if they have interpreted the instructions properly.
If you are a teacher who is using these puzzles in your classroom, please send me an email at firstname.lastname@example.org with information about what you teach and where you teach. I will be happy to forward an answer key to you.