One of the things I love most about the #MTBoS is that for every idea I blog, I seem to get three or more ideas back in return. Recently, Christine Mishra left a comment on an old post from 2013 with a link to a (new-to-me) logic puzzle: Futoshiki. Christine thinks these would be awesome to include in a unit on inequalities, and I agree!
Here’s the link she sent me to check out.
Each column and row can only contain a number once. And, all inequality symbols must be obeyed.
Doesn’t this look fun???
Don’t worry, there are smaller puzzles, too. They go down to a 4 x 4.
I asked my fiance if he had heard of these puzzles before, and we ended up spending a couple of hours skyping and trying to solve the same puzzles at the same time. Yeah, we know how to have fun. 🙂
If you’re looking to try these out online, the best site we found was BrainBashers. It lets you make pencil marks which is a huge help in the problem solving process.
Anyone use these with students? Or have an idea of how to best use these? I’m thinking I’ll give students one as a Figure It Out! Friday puzzle.
More Printable Paper and Pencil Logic Puzzles
- Sankaku Puzzles
- Strimko Puzzles in the Classroom
- Square Sudokus
- Make It Pythagorean Puzzles
- Number Ball Puzzles by Naoki Inaba
- Hidato Puzzles
- Step Puzzles by Naoki Inaba – A Logic Puzzle for Introducing Arithmetic Sequences
- Kazu Sagashi Puzzles from Naoki Inaba
- Factor Tree Puzzles Inspired by Dr. Harold Reiter
- Strimko Logic Puzzles Review
- Tents and Trees Puzzles
- Slants Puzzles
- Angle Mazes by Naoki Inaba
- Zukei Puzzles
- Japanese Logic Puzzles for the Secondary Math Classroom
- Area Maze Puzzles from Naoki Inaba
- Masyu Puzzles
- KenKen In The Classroom
- Futoshiki Puzzles
- Hashi Puzzles
- Shikaku Puzzles
- Nonogram Puzzles
- Digit Cells Puzzle
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Faezal Yunus
Thursday 27th of August 2015
Wow! These are great -- thanks for making me discover them. You should do a post on Magic Squares, too (the greater-than equal signs were akin to the arrows used for direction in an odd magic square). Check this out: https://mathworld.wolfram.com/MagicSquare.html