Color By Code Worksheets for Teachers
Bring printable color by numbers, letters and more foundational concepts into your classroom with fun worksheets created by teachers for teachers.
This collection of curriculum-aligned teaching resources is designed to add an engaging element to your worksheets for math, science, ELA 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 color 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 Color By Code Worksheet?
Haven't heard the term color by code? That's OK! Maybe you've heard of color by numbers or coloring by math? Or maybe you call them mystery picture worksheets?
These fun worksheets allow students to pull out their crayons or colored pencils to color a picture based on a predetermined colour key or code, where each color corresponds to a specific number or symbol. The goal is to match the numbers or symbols on the picture with the corresponding colors to reveal a mystery picture.
Color by code refers not just to color by numbers but also coloring by parts of speech, synonyms, addition and other educational concepts!

Coloring by shape is a type of color by code worksheet!
History of Color by Numbers
Ever wonder how coloring 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 colors.
In the 1950s, an 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 color by numbers in schools! His kits included pre-printed canvases, numbered paints and brushes, and his idea was soon adapted to make coloring books for kids.
In the versions for kids, numbers or symbols were added to line drawings instead of canvases, and young children could easily color within the lines using crayons or colored pencils!
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Color By Number Fire Truck Coloring Page
Build number identification skills with a Color by Number Fire Truck Coloring Page.
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Color by Parts of Speech Worksheet – Chameleon
Practice identifying different parts of speech with this fun color-by-code worksheet.
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Identify Sentence or Fragment Worksheet Pack
Use an Identify Sentence or Fragment worksheet to help your students build their sentence writing skills.
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Color by Number – Multiplication Fact Practice (Mixed)
Practice multiplication facts through 12 with this fun color by number worksheet.
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Place Value Color by Number Worksheets
Share these place value color by number worksheets with your students for a fun way to review place value up to the hundred thousands place.
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Color the Synonyms and Antonyms Worksheet
Explore vocabulary with this synonyms and antonyms worksheet for 3rd and 4th grade students.
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Fall Color By Part of Speech Worksheet - Nouns, Verbs, Adjectives, Adverbs
Use this color by part of speech worksheet as a fun fall activity with your students.
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Color-by-Code Grammar- Back to School Coloring Sheet
Use this color by code grammar worksheet as a back to school parts of speech review activity with your students.
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Crazy Boxes – Multiplication Facts of 7
Create a color pattern using multiplication facts of 7 with this color by number worksheet.
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Division Worksheets
Build division confidence with these differentiated division worksheets.
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Trick or Treat Digraphs Worksheet
Sort Halloween Digraphs and color them by code with a fun Halloween Phonics worksheet.
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What is the Syllable Type? - Color By Syllables Worksheet
Practice identifying the six syllable types in common words with this color-coding activity.
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Adding and Subtracting Decimals – Differentiated Mystery Image Worksheets
Have students practice adding and subtracting decimals with this mystery image worksheet.
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Multiples of 3 — Fact Fluency Pack
Strengthen 3 multiples fact fluency with this engaging worksheet pack, created to help teachers reinforce threes multiplication facts through meaningful and varied practice activities.
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Multiples of 11 — Fact Fluency Pack
Practice multiples of 11 with an engaging fact fluency pack that helps teachers strengthen multiplication recall through varied, ready-to-use activities.
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Addition Practice Worksheets
Support student fluency with addition practice worksheets that build confidence with addition facts from 0–20 through fun, varied, and engaging tasks.
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Color By Code Comma Splice Worksheet
Use a Color By Code Comma Splice Worksheet to practice identifying and correcting comma splices.
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3 States of Matter - I Spy Worksheets
Recognize examples of solids, liquids, and gases with a pack of printable States of Matter I Spy Worksheets!
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Telling Time to 5 Minutes- Color By Number PDF
Tell time to the nearest five minutes and have fun with a Telling Time Math Coloring Page.
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Diphthong Coloring Activity Worksheets
Practice finding different vowel team diphthongs with this set of fun color-by-code worksheets for your students.
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Kindergarten Sight Word Worksheet - Color By Sight Word Snake
Build fluency with high-frequency words and give your students a fun way to practice with an editable kindergarten color-by-sight word worksheet.
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Color by Number – Repeated Addition and Multiplication
Guide your students to connect repeated addition with multiplication by completing this color-by-code multiplication worksheet.
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Color by Parts of Speech (Nouns, Verbs, Adjectives, Pronouns, Prepositions, and Adverbs) – Toucan
Practice identifying different parts of speech with this color by code worksheet.
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Suffixes - Color By Code Worksheet
Reveal the hidden picture and practice using the inflectional endings -s, -es, -ies, and -ves with a color-by-code worksheet.
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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 color guide to reveal a mystery image.
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Color By Code Worksheet - Synonyms and Antonyms
Reveal the hidden picture and practice using synonyms and antonyms with a vocabulary color-by-code worksheet.
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Football Mystery Grid Worksheet - Parts of Speech
Follow the color-coded parts of speech guide to fill in the word grid and reveal a Football-themed mystery image.
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Dividing Whole Numbers – Color by Number Worksheet
Solve long division problems with 2-digit divisors and color the grid according to the key to reveal a mystery picture.
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Multiplication Mystery Picture (Pencil)
Use the color-coded multiplication guide to complete the grid and reveal a mystery picture.
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Grammar Grid Mystery Picture Worksheet-Nouns, Verbs, Adjectives
Follow the color-coded parts of speech guide to fill in the word grid and reveal a mystery image.
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Color by Number - Multiplication Facts of 4
Get your students practicing their facts of 4 with this color by number worksheet.