Mini Minds Hub · Free printable
Christmas Code Breaker: Free Printable Game for Year 6
- ForYear 6
- StageKey Stage 2
- CostFree
- FormatPrintable PDF
Christmas Code Breaker is a free printable game for Year 6 (ages 10 to 11). Children crack secret Christmas messages written with a shift of three. They decode each message letter by letter, then check that the sentence makes sense. It needs only a pencil, and page 2 gives the grown up notes, help ideas, a stretch task and the answers.
It comes from the Mini Minds Hub, the free library of printables from Jaques of London, the British games and toy company that has been making games for families since 1795. Print both pages, give page 1 to your child and keep page 2 for yourself. Black and white printing works well.
What is on the sheet
Children meet short Christmas messages written in a secret code. Every letter has been moved three places along the alphabet, so the messages look like nonsense until they are decoded. The sheet has numbered questions with space to write each answer. Children work out the real words, read the whole message back and check that it makes sense. It rewards patience and careful letter work more than speed.
- PHUUB FKULVWPDV WR BRX DOO
- VDQWD LV RQ KLV ZDB
- WKH HOYHV ORYH WR ZUDS SUHVHQWV
- VQRZ IDOOV RQ WKH WUHHV
Worked example: cracking a code word
Decode the coded word EHOO. The shift is three.
This is a different word from the ones on the sheet. It shows two ways to work with a shift of three.
Method 1: two rows of alphabet- Write A to Z in a row. Underneath, write the alphabet again, starting at D so that D sits under A.
- Find the first coded letter, E, in the bottom row. The letter directly above it is B.
- Do the same for H, which gives E. Then O gives L, and the last O gives L again.
- Take the first coded letter, E. Count back three letters: D, C, B. So E stands for B.
- Take H. Count back three: G, F, E. So H stands for E.
- Take O. Count back three: N, M, L. So O stands for L. The last letter is also O, so it is also L.
Make your own cipher tools
Two alphabet strips
Write the alphabet along a strip of paper. Make a second strip the same. Slide the lower strip so that D sits under A. Read down the strips to swap letters.
A cipher card
Fold a card in half. Write the plain alphabet on the top row and the shifted alphabet on the bottom row. Keep it beside the sheet as a quick guide.
A secret message
Choose a short Christmas message. Write it out, then swap each letter using your strips. Leave the spaces between words as they are.
A decoding check
Give your message to someone else. Ask them to decode it, then compare their answer with your original message.
Why use secret codes in English?
A shift code is a simple cipher. Every letter moves the same number of places along the alphabet. To crack it, a child has to know the order of the alphabet well and follow one rule without slipping. That makes it a gentle way to practise careful, exact work with letters, and the secret message gives the work a purpose.
Decoding is also reading and spelling practice. Children decode a word, then ask whether it looks right. If a word looks odd, they go back and check a letter. Reading a full decoded message tests whether the sentence makes sense. This builds the habit of checking your own work, which helps in every subject.
Fun facts about secret codes
- The English alphabet has 26 letters, so a message can be hidden by moving every letter along by the same amount.
- A shift cipher is often called a Caesar cipher. It is said to be named after Julius Caesar, a Roman leader.
- In ordinary English writing, the letter E is used more often than any other letter.
- A cipher hides the letters of a message. A person who knows the rule can turn it back into plain writing.
- Computers use codes today to help keep private information safe, although their codes are far more complicated than a shift.
Skills and curriculum link
- Decoding messages
- Alphabet order
- Following a rule
- Careful letter work
- Checking spelling
- Problem solving
What children will be able to do
- I can decode a message by shifting letters.
- I can follow the code rule carefully.
- I can write a secret message for someone else.
Helpful ideas for cracking codes
- Alphabet orderKnowing the alphabet in order, and being able to move along it, is the key skill. A written row of letters saves guessing and mistakes.
- Direction mattersCoding moves letters one way. Decoding moves them back the other way. Check which way you are going before you begin.
- Wrapping roundThe alphabet is a loop for this game. Counting back from the start of the alphabet carries on from the end, and counting forward past the end carries on from the start.
- Look for small wordsIn English, a word with one letter is usually A or I. Short words give good clues, and checking them helps you spot a wrong guess early.
Key words
- CodeA way of writing a message so that only people who know the rule can read it.
- CipherA kind of code that changes the letters of a message by a rule.
- ShiftThe number of places each letter moves along the alphabet.
- DecodeTo turn a secret message back into plain writing.
- EncodeTo turn a plain message into a secret one.
- AlphabetAll the letters of a language, written in their fixed order.
How to use it
- Print both pages. Page 1 is for the child. Keep page 2 for the grown up.
- Write the alphabet in a row. Write a second row starting three places along to help.
- Work through the first message together. Talk about each letter choice and how you know it is right.
- Let the child decode the rest. Check with page 2, and ask them to read each message aloud to see if it makes sense.
- Come back to it another day. Repeating a familiar activity builds confidence.
Help, stretch and game ideas
If it feels too hard
Decode one word at a time. Use the two rows of alphabet and put a finger on each coded letter as you find it. Write the plain letter above it. Start with the shortest word, as it is easiest to check.
To stretch confident children
Make a secret message of your own with a shift of five. Write out the alphabet rows again, starting five places along. Swap your message with a friend and see if they can crack it without being told the shift.
Make it a game
Swap messages with a friend and crack each other's codes. Each player writes a short Christmas message with a shift of three. Decode your partner's message, then swap back and check. Use a timer to see who finishes first.
Talk about it
- How did you know how many letters to shift?
- How could you check your decoded message?
- What would make a code harder to crack?
- Which word was easiest to decode first, and why?
- What did you do when a decoded word did not look right?
- Who might need a secret code in real life?
Take it off the page
Christmas card cipher
Write a short message inside a handmade Christmas card using a shift of three. Give it to a family member with the alphabet rows so they can read it.
Secret message trail
Hide coded notes around the house, each one leading to the next. The last note can point to a small surprise. Keep a cipher card nearby.
Alphabet loop
Write the alphabet in a circle on paper. Use it to see how counting back from the start carries on from the end.
Who it is for
Parents
Sit beside your child for the first message, then let them lead. Ask them to explain how they decoded each word. Keep the alphabet rows in view the whole time.
Teachers
Use it as a starter, plenary, early finisher task or table activity. It supports careful reading and spelling at strand level, and page 2 offers support and stretch for mixed groups.
Home educators
Pair it with a story or a Christmas book. Children can write their own coded messages to brothers, sisters or friends. It can be reused later for revision.
Where this fits
Before this sheet, children need to know the alphabet in order and be happy reading and spelling short sentences. Sorting words into alphabetical order and playing with anagrams are good ways to build those skills.
After it, children can try a different shift, write longer coded messages, or compare shift codes with other kinds of puzzle. They can also use their growing care with letters in spelling and proofreading work.
Check it worked
Ask these when the sheet is finished. Listen for the reasoning, not just the answer.
- How did you know how many letters to shift?
- How could you check your decoded message?
- What would make a code harder to crack?
Questions parents and teachers ask
- What age is Christmas Code Breaker for?
It is written for Year 6 (ages 10 to 11), in Key Stage 2. Younger children can try it with an adult and the alphabet rows. Older children can use it as a quick warm up or a fun holiday task.
- What will children practise?
Children practise decoding messages by shifting letters. They use alphabet order, follow a rule carefully and check that each decoded word makes sense. They can also write a secret message of their own for someone else.
- How do I use the sheet?
Print both pages. Write the alphabet in a row, then write a second row starting three places along. Work through the first message together, then let your child lead. Check against the notes and answers on page 2.
- What if my child finds it too hard?
Ask them to decode one word at a time. Use the alphabet rows and a finger to follow each letter. Start with the shortest word, then build up to a whole message once they feel more confident.
- Is it free?
Yes. It is free to print for home and classroom use. You can print it again for brothers, sisters or revision, and use it as often as you like.
- Is it a screen free activity?
Yes. It needs only paper and a pencil, so it works well for quiet time, rainy days and school holidays. Children read, think and write by hand, which gives their eyes a rest from screens.
- Can teachers and home educators use it?
Yes. Teachers can use it as a starter, plenary, early finisher task or table activity with no preparation beyond printing. Home educators and tutors can use it alone or as part of a wider English plan.
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Made by Jaques of London, making games for families since 1795. A printable supports classroom learning and does not replace a teacher.