- Free interactive crossword puzzles for young learners and adult English language students at all levels.
- The Tower of English offers English puzzles and links to puzzle related websites.
- ...a topic in English, say “Family and Friends”, I can print out six different sets then split the class into six groups and give them each a unique puzzle to solve.
- From the Cambridge English Corpus. However, we argue that scenarios conceptually equivalent to the muddy children puzzle can occur in robotics.