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.

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! 

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!

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

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

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!

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.

There's a secret code hiding in this worksheet. Use your knowledge of American Sign Language to decode the hidden message.

This worksheet will have your students use codes to help them understand the meaning of the story.

Secret codes and ninjas make everything more interesting, including subtracting 4-digit numbers!

Practice dividing by two-digit numbers just got a lot more interesting thanks to secret codes and Ninja Aki.

Young readers practice close reading as they learn about black bears in this literacy worksheet.

Have your third graders pull out their color pencils and learn about the history of fidget spinners. This colorful exercise will increase your students' understanding of nonfiction text.

Learners will use the alphabet key to unlock the words written in the heart in this playful Valentine's Day puzzle.

Have fun with grammar and decode these scrambled adjectives, all starting with the letter A! This is a great way to work vocabulary and spelling skills.

Learn more about our planet with this fun crossword puzzle for second and third graders!