Easy/Medium Difficulty:
* "I before E except after C" words:
* believe, receive, niece, field, piece
* Words with silent letters:
* know, knife, wrong, wrist, island
* Words with double consonants:
* happy, puppy, funny, silly, tomorrow
* Words with common spelling patterns:
* friend, train, street, jump, climb
* Homophones (words that sound alike but have different spellings and meanings):
* there, their, they're
* to, too, two
* your, you're
Medium/Hard Difficulty:
* Words with tricky vowel combinations:
* friend, neighbor, strange, weather, ocean
* Words with prefixes and suffixes:
* unhappy, carefully, beautiful, disappear, disagree
* Words with "ough" spelling variations:
* through, thought, cough, tough, enough
* Words with "ei" and "ie" variations:
* seize, chief, relieve, believe, field
* Words with common spelling errors:
* separate, definitely, principal, accidentally, government
Hard Difficulty:
* Words with unusual spellings:
* rhythm, psychology, conscious, mischievous, foreign
* Words with multiple syllables and complex vowel sounds:
* beautiful, extraordinary, opportunity, consequently, extraordinary
* Words with silent "e" at the end:
* hope, make, skate, shine, take
* Words with "y" at the end:
* cry, try, fly, deny, reply
* Words with "c" and "g" soft and hard sounds:
* cent, city, gentle, giant, gem
Remember: These are just a few examples, and the difficulty level can vary depending on the individual student's age, learning style, and prior knowledge. It's always best to choose words that are appropriate for your student's current skill level and to provide them with opportunities to practice and learn.