# GCF of 2 Numbers, Trick Finds it Fast

Ever need to find the GCF of two numbers? Here’s a trick for finding the GCF of any two numbers — very quickly. This is an original trick, so I doubt you’ll find it anywhere else online. But most important, it’s easy to use, and it works no matter how large the numbers might be. Also nice … learning this […]

# Summertime Geometry Scavenger Hunt

Math is everywhere, when you start looking for it. In this post you learn about a fun summertime geometry project. Have your children look at highway signs and try to find as many geometric objects as they can. They can even come up with geometry problems based on the signs, too.

# Monday the 13th

If Friday the 13th is a bad luck day, does that imply that Monday the 13th is a good luck day? Compose a logical argument for this question. Whoever sends in the best logical argument, arguing either side of this question, wins a Singing Turtle reward. Read the post to find out the details.

# James Bond Math Challenge

Take this informal quiz. Watch this clip from a James Bond movie, and see what math themes and patterns you can find in the art and visuals. Then drop me a comment. I’ll share all comments that make reasonable statements.

# Movie Math: Wake Students Up with Silver Screen Riddles

The end of the year is near. So give students something different. Here’s an idea for a complete lesson plan that uses math riddles to grab students’ attention. The clip shows a math riddle from the movie “Die Hard.” This is a springboard to get everyone excited about riddles. From there you have many options […]

# Memorization in Algebra — They’ll LOVE you for it (later)

Memorization gets a bad rap in upper-level secondary math courses. But memorization of certain key facts can actually help students tremendously. In this post I suggest that students memorize a certain fact set, in order that they become more proficient at a wide range of Algebra 1 and 2 skills. And I show how you […]

# Math in movies: Who says math isn’t cool?

Who says math is not “cool”? Check out this list of movies that prominently feature math content in the storyline? This should be enough to motivate many of our students who complain that math is not relevant to the “real world,” or who just feel that math is only for “nerds.”

# Rubik’s Slide: play your way to geometric knowledge

The people who gave us the Rubik’s Cube recently came out with another fun puzzle, the Rubik’s Slide. This post tells all about this fun puzzle, which actually helps students learn some geometric concepts.