Colour By Code Worksheets for Teachers
Bring printable colour by numbers, letters and more foundational concepts into your classroom with fun worksheets created by teachers for teachers.
This collection of Australian curriculum-aligned teaching resources is designed to add an engaging element to your worksheets for maths, science, English and more! Best of all, each printable has been carefully reviewed and selected by an expert on the Teach Starter teaching team, so you know it's ready for your classroom, your lesson plans and your students!
Not familiar with the term colour by code, or just looking for some fresh ideas to use these worksheets in the classroom? Read on for a primer from our teacher team!
What Is a Colour By Code Worksheet?
Haven't heard the term colour by code? That's OK! Maybe you've heard of colour by numbers or colouring by maths? Or maybe you call them mystery picture worksheets?
These fun worksheets allow students to pull out their crayons or coloured pencils to colour a picture based on a predetermined colour key or code, where each colour corresponds to a specific number or symbol. The goal is to match the numbers or symbols on the picture with the corresponding colours to reveal a mystery picture.
Colour by code refers to not just colour by numbers but also colour by parts of speech, synonyms, addition and other educational concepts!

History of Colour by Numbers
Ever wonder how colouring by numbers became so popular?
The exact history of these sheets is hard to track down, but as far back as the early 20th century, people were 'painting by number' as a recreational activity. Then an activity mainly for adults, it involved painting pre-drawn canvases with numbered sections that corresponded to specific paint colours.
In the 1950s, an American artist called Dan Robbins developed a commercial version of the concept called 'Paint by Numbers' that helped the idea go mainstream and give life to what we now call colour by numbers in schools! His kits included pre-printed canvases, numbered paints and brushes, and his idea was soon adapted to make colouring books for kids.
In the versions for kids, numbers or symbols were added to line drawings instead of canvases, and young children could easily colour within the lines using crayons or coloured pencils!
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Multiplication With Equal Groups – Colour by Number Worksheet
Guide your students to determine a multiplication problem for an equal groups model with this colour-by-number worksheet.
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Colour by Missing Angles Worksheets
Get students to find the size of missing angles on right angles, straight angles and angles at a point with this maths worksheet with a difference!
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Halloween Multiplication Colour By Number Worksheet
Practise multiplying single-digit numbers with a Halloween colour-by-number worksheet.
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Rounding Decimals – Differentiated Colour by Code Worksheet
Guide your students to round decimals to the nearest tenth and hundredth with this differentiated colour-by-code worksheet.
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Prefixes and Suffixes - Colour By Code Worksheets
Practise identifying words with affixes with a fun colour-by-code worksheet.
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Colour By 3D Objects - Worksheet
Practise identifying 3D objects and their attributes with a printable code-based colouring task!
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Real-World 3D Objects - Colouring Worksheet
Explore three-dimensional objects in the real world with this colouring worksheet.
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Colour By Suffix Worksheet
Reveal the hidden picture and practise using the inflectional endings -s, -es, -ies, and -ves with a colour-by-code worksheet.
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Colour the Periodic Table - Worksheet and Poster
Colour the periodic table with a printable colour-coding worksheet.
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Parts of Speech - Colour by Code Mystery Picture Worksheet
Follow the colour-coded parts of speech guide to fill in the word grid and reveal a mystery image.
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Easter Hundreds Board Mystery Pictures
A set of 9 Easter-inspired mystery hundreds charts.
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Valentine-Themed Mystery Picture - Division Facts
Have fun with your Valentine’s Day Maths lessons with a division colour by number worksheet!
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Christmas Colour By Number - Hundreds Chart Mystery Pictures Activity
Print the perfect maths activity for Christmas: a set of 12 Christmas-inspired mystery hundreds charts.
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Pixel Art Syllable Types
Consolidate understanding of syllable types with these appealing worksheets.
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Colour by Number - 5 x Multiplication Facts
An engaging activity to consolidate your students' understanding of multiplication facts.
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Crazy Boxes – 4, 6, 7, 8 Times Tables
A fun multiplication worksheet where students create a colour pattern using 4, 6, 7 and 8 times tables.
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Crazy Boxes – 12 Times Tables
A fun multiplication worksheet where students create a colour pattern using 12 times tables.
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Crazy Boxes – 9 Times Tables
A fun multiplication worksheet where students create a colour pattern using 9 times tables.
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Fractions Greater Than 1 Worksheet Pack (Colour-by-Number)
Use our Fractions Greater Than 1 Worksheet Pack to give your students a fun way to practise converting between improper fractions and mixed numbers.
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States of Matter - Colour by Code Worksheet
Engage your students and have fun identifying the states of matter with a colour-by-code worksheet.
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Comparing Decimals – Colour by Number Worksheet
Compare decimals and create a beautiful stained-glass picture with this colour-by-number worksheet.
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Rounding to 10, 100, and 1000 Worksheet — Halloween Colour-By-Number
Round each number to the place of the underlined digit with a fun Halloween colour-by-number worksheet.
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Decimal Designs – Differentiated Decimal Rounding Worksheet
Guide your students to round decimals to different places and create a beautiful design with this differentiated worksheet.
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Plant Adaptations - Colour by Number Worksheets
Learn about the adaptations of plants in the rainforest, tundra, and desert with colour-by-number worksheets.
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Evaluate Expressions (One Variable) – Mystery Picture Worksheet
Substitute values for variables and use your understanding of the order of operations to solve expressions with this worksheet.
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Equivalent Fractions – Mystery Picture Worksheet
Determine equivalent fractions while using the colour guide to reveal a mystery image.
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Colour by 2D Shape (Easter Egg)
An Easter-themed colour by 2D shape activity.
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Pop Art Products - Basketball Colour By Number Worksheet
Bring some pop art into the classroom with a multiplication colour-by-number worksheet.
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Synonyms and Antonyms Worksheet - Colour by Code
Explore pairs of synonyms and antonyms with this colour-code worksheet.
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Colour by Syllable Type - Worksheet
Practise identifying the six syllable types in common words with this colour-coding activity.
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Halloween Division Mystery Picture - Multi-Digit
Have a bit of Halloween maths fun with a division colour by number worksheet.
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Colour by Number - 2, 3, 5, 10 Division
An engaging activity to consolidate your students' understanding of division facts.