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Free Hard Puzzles
Free worksheets, coloring pages, mazes, word searches, dot-to-dots, tracing and cut-and-sort sheets for every grade from Preschool to Grade 12, at easy, medium and hard levels. Every one is a free PDF on US Letter or A4, with a low-ink option. Answer keys are separate pages for grown-ups.
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- Letter or A4
- Low-ink option
- Answer keys for grown-ups
130 printables · showing 73–96
Lines and angles word search: 12 words
Mathematics · Grade 5 · Puzzle · 1 page
Pigpen code: algorithms
Coding · Grade 5 · Puzzle · 1 page
Pigpen code: matter and its changes
Science · Grade 5 · Puzzle · 1 page
Simple machines word scramble with a secret word
Science · Grade 5 · Puzzle · 1 page
Trade, scarcity and markets word scramble
History, Civics & Social Studies · Grade 5 · Puzzle · 1 page
Capitals of Europe word search: 15 words
Geography · Grade 6 · Puzzle · 1 page
Cryptogram: cells and organelles
Science · Grade 6 · Puzzle · 1 page
Cryptogram: functions
Coding · Grade 6 · Puzzle · 1 page
Editing words word scramble with a secret word
Typing & Digital Skills · Grade 6 · Puzzle · 1 page
Energy and heat transfer crossword
Science · Grade 6 · Puzzle · 1 page
History of space exploration word scramble with a secret word
Science · Grade 6 · Puzzle · 1 page
Pigpen code: maya, Aztec and Inca
History, Civics & Social Studies · Grade 6 · Puzzle · 1 page
Web pages word search: 15 words
Coding · Grade 6 · Puzzle · 1 page
Binary numbers crossword
Computers & Digital Literacy · Grade 7 · Puzzle · 1 page
Cryptogram: indus Valley civilization
History, Civics & Social Studies · Grade 7 · Puzzle · 1 page
Data privacy word search: 14 words
Computers & Digital Literacy · Grade 7 · Puzzle · 1 page
Debugging like a pro word scramble with a secret word
Coding · Grade 7 · Puzzle · 1 page
Genes and heredity crossword
Science · Grade 7 · Puzzle · 1 page
Pigpen code: data types
Coding · Grade 7 · Puzzle · 1 page
Pigpen code: engineering design
Science · Grade 7 · Puzzle · 1 page
Plate tectonics crossword
Geography · Grade 7 · Puzzle · 1 page
Writing online politely word search: 14 words
Typing & Digital Skills · Grade 7 · Puzzle · 1 page
AI basics crossword
Computers & Digital Literacy · Grade 8 · Puzzle · 1 page
Binary numbers word search: 12 words
Computers & Digital Literacy · Grade 8 · Puzzle · 1 page
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