Practice converting between radical form and rational exponent form with this free and fun rational exponents activity that is formatted as a square tarsia matching puzzle. What math courses is this activity suitable for? I created this square matching puzzle to give my AP Calculus AB students some much-needed practice converting between expressions written in radical or rational form and expressions written as rational exponents. While this is considered an Algebra 2 topic in Oklahoma where I teach, the majority of my calculus students have forgotten that the square root of x can be rewritten ..read more

Can you assemble the four pieces to create a 4×4 square with a checkered pattern? Instructions Place the four provided pieces on the 4 x 4 grid to form a square with a checkered pattern. Puzzle Source I ran across this puzzle in a collection of 199 different mathematical puzzles that is offered as a free download from IREM de Lyon. This is a top-notch puzzle resource if you speak French. I sadly do not speak French, but I was able to use the Google Translate app to translate quite a few of the puzzle instructions in order to use them in my classroom. Other puzzles I typed up from this same ..read more

Download this printable 1 cm graph paper. This standard graph paper features a 1 cm grid and is available to download for free in a convenient pdf format. It is designed to print on US letter size paper.  Need Another Type of Graph Paper? As a high school math teacher, I often find myself creating various types of cartesian graph paper for my students to use for various projects or to accompany a specific math worksheet. I have decided to start uploading these as pdf files so other teachers can use them in their classroom as well.  List of Graph Paper Types  Inch Grid Sizes  ..read more

Can you place the numbers 1 to 7 in the diagram so that each line of numbers has the same sum? My students tackled this puzzle this past week as one of our puzzles of the week. A few of my high school students had a bit of trouble making sense of the puzzle directions. They just wanted to make just the two horizontal lines have the same sum. So if you are working with younger students, it might be worth it to go over the directions before starting and make sure students realize where all of the lines of 3 are in the puzzle diagram. Puzzle Instructions Place the numbers 1 to 7 in the triangula ..read more

In this pentominoes rabbit puzzle, you are challenged to use a standard set of twelve pentominoes to build the shape of a rabbit. This makes a great addition to your classroom to celebrate the start of spring or Easter. We tackled this as our puzzle of the week this week since Easter is this upcoming Sunday. I hung three copies of this puzzle on the dry erase board with sets of pentominoes in one of my favorite classroom organization tools: Charles Leonard magnetic pockets. I love that students can grab the entire pocket and take the pentominoes back to their table without dropping pentomino ..read more

Can you place the numbers 1 to 5 in the correct places to solve the equal sums puzzle? Puzzle Instructions Place the numbers 1 to 5 in the triangular diagram so that the sum of the numbers on the vertices of the smaller triangle is equal to the sum of the numbers on the vertices of the larger triangle. Puzzle Source I ran across this puzzle in a collection of 199 different mathematical puzzles that is offered as a free download from IREM de Lyon. This is a top-notch puzzle resource if you speak French. I sadly do not speak French, but I was able to use the Google Translate app to translate qui ..read more

In this pentominoes turtle puzzle, you are challenged to use a standard set of twelve pentominoes to build the shape of a turtle. This is part of a collection of animal-shaped pentominoes puzzles available here on my blog. More Animal Pentominoes Puzzles Pentomino Pig Pentomino Elephant Pentomino Terrier Pentomino Penguin Pentomino Frog Pentomino Butterfly Pentomino Goose Pentomino Reindeer Pentomino Fish Pentomino Turtle Puzzle Instructions The goal of this pentominoes turtle puzzle is to construct the shape of a turtle using a standard set of twelve pentominoes. The pentominoes may be f ..read more

Looking for a fun divisibility rules activity? This collection of free divisibility rules activities and games will make teaching divisibility fun! Rules of Divisibility  A number is considered to be divisible by a given number if there is no remainder when the two numbers are divided. When working with large numbers, it is often easier to use divisibility tests instead of performing long division by hand.  2: A number is divisible by 2 if the last digit is even (0, 2, 4, 6, or 8).  For example, 48 is divisible by 2 because the last digit of 48 (8) is even.  3: A number is ..read more

Help your students remember their divisibility rules with this free printable divisibility rules chart. It is also available to download as a poster for your classroom. This divisibility rules chart would make the perfect reference for students playing my divisibility rules game, Is It Divisible? What are Divisibility Rules?  Divisibility rules are easy to memorize tests that students can use to determine if any whole number is divisible by a given number. Often, this is referred to as performing a “divisibility test.”  Depending on what number you are looking to check for divisibil ..read more

Bring some humor to your classroom with this collection of the best geometry jokes and puns. These jokes are sure to add a spark of fun to your geometry lesson and give your students a good laugh (or at least a groan at your cheesy math jokes.) As a high school math teacher, I have been collecting mathematical jokes and math puns for years to add to my math lessons. I want to make it easy for you to do the same with these funny geometry puns.  These funny geometry jokes are school-appropriate and teacher approved. These jokes would be appropriate for any geometry class at the middle scho ..read more