Set your sleuth-in-training on the case with this hidden-message activity.

Every child loves to communicate in secret code! Learn the Morse Code alphabet with this great printable.

Put your detective-in-training on the case with this secret-message activity.

Put your state capital knowledge to the test in this big, bad state capital quiz!

Use fruits and vegetables to decode a message in this berry fun activity!

Learn some of the common Morse code prosigns with this fun activity!

Decode the history of Morse code with this reading comprehension activity.

Crack the code and break the ice with these clever riddles!

In this exercise your students will color code the key components of an example informative paragraph.

Take a daring dive into divison as you help a dragon crack the code! 

Become a decimal detective in this inviting expanded form worksheet!

Have your second and third graders think like detectives as they crack the code and solve the compound word mystery!

Kids solve multiplication problems to crack the code and find the egg-laying mystery mammal on this third grade math worksheet.

Do you avoid stepping on cracks in the road? Have some fun exploring a common childhood superstition!

Use your addition and decoding skills to solve eight problems in this fun math puzzle!

In this excerpt from our upcoming Spy Math workbook, your kid gets to help secret agent Ian Danger by cracking the code on this mysterious message.

Help our agent Ian Danger crack the safe by re-grouping these combinations of digits!

To solve this math worksheet your kid will need to follow the instructions and use his knowledge of prime numbers.

Review common vocabulary words with this fun and creative color-by-number worksheet!

Ever crack a wishbone in half? Or perhaps you feel it's bad luck to spill the salt. Have some fun with food voodoo!

Take a crack at correcting run-on sentences (all based on classic Shakespeare quotes) in this page from one of our upcoming workbooks.

Step right up, Halloween experts! This creepy crossword puzzle is jam-packed with spooky clues and maddening monsters. Can you crack this challenging puzzle?

Your child can be a code breaker and practice her multiplication skills. Multiply three-digit numbers on this coded math worksheet, and help a math ninja out!

Take a crack at recreating an ancient art made famous by the Incan empire. Color in a sample textile, then use the next page to create your own from scratch.

Did you spill the salt? Step on a crack? Do you even care? You decide what, if anything, causes bad luck. Get the juices flowing for some creative writing.

Practice the concept of perfect squares with this fun worksheet. To uncover the code your child will need to determine if each number is a perfect square.

Create a masterpiece as you solve multiplication and division problems with this third-grade worksheet!

Subtract the numbers to find the difference, then color code the answer for odd or even.

Your fourth grader can save Christmas by helping Santa decipher an important code. As they help Santa, they'll be getting some important practice with coordinates.