“Square Root Day? What’s that? That was my response last week when a student in my Calc class mentioned that Monday 4/4/16 was Square Root Day. Up until that time, I had never heard of Square Root Day. My student proceeded to inform me that Square Root Day’s occur when both the day of the […]

It’s that time of year again – March 14th – that’s right, it’s PI DAY! PI is an irrational number. No, that doesn’t mean it’s unreasonable.  It means it’s not rational – that is PI can not be represented as a ratio of two integers. In other words, PI can not be represented as a […]

Although it was an easy two hour trip, I rarely visited New York City. However, each time I did, I found it more and more interesting. I too have found that “interesting” is an interesting word, but that’s another story. In any case, it had been years since my last visit. This year my wife […]

 It’s Tuesday, so here are some more Missing Word puzzles.  Today there are ten puzzles of varying difficulty. As a refresher in each puzzle, a word or words are missing, replaced by their first letter.  In order to solve each puzzle, you need to find the missing words.  Here’s an example of how they work: Puzzle1:       […]

Today’s puzzle is another set of fun riddles called Associative Riddles.  Associative riddles look for how two ideas are associated.  This association is often with a word they have in common.  For example, carpet and carport  have “car” in common.  Making an associate riddle, one may ask “what do a rug and a garage have in […]

Today’s puzzle is another original puzzle called Number Junctions. I originally named these puzzles Octangles as they contained a collection of octagons. However, when Mindware published them in book form (actually two books), they changed the format to circles and subsequently the name. Number Junctions are easy to understand – all you need to do […]

Today’s puzzle is another Counting Shapes (like day 2 of this years Holiday Puzzles).  As with many puzzles, the concept of Counting Shapes puzzles is very straight-forward and getting an answer is very easy, but getting the correct answer is a bit more challenging. In today’s puzzles, you will be presented with a collection of triangles. All you […]

Today’s puzzle is another original puzzle called Number Circuits.  I originally named these puzzles Magic Puzzles as they are based on Magic Squares.  However, when Mindware published them in book form (acually two books), they changed the name.  Number Circuits are easy to understand – all you need to do is to place the given […]

Today’s puzzle is called a Snowflake Puzzle.  This is an extension of the Kuruko Puzzles that I created. Like Kurulko puzzles, they are similar to Sudoku puzzles.  I call them Snowflake puzzles because of their shape.  Snowflakes are symmetric shapes with six points.   The Snowflake puzzle follows this design.  It is comprised of 42 hexagons (six sided shapes).  […]

Today’s puzzle is fun for everyone – Letter Riddles.  I came up with these riddles years ago while sitting at a restaurant with my family while waiting for the meal.  I was challenging my oldest daughter with these and in return she came up with a couple to challenge me! The idea is really simple – […]