Language Arts Grade Six

Unit Thirteen, Lesson One: Letter Patterns

  1. request
  2. western
  3. testing
  4. wetter
  5. letter
  6. reset
  7. chemical
  8. element
  9. formula
  10. period
  1. chart
  2. oxygen
  3. oxide
  4. iron
  5. alloy
  6. calcium
  7. chloride
  8. silver
  9. gold
  10. copper
Letter Patterns

Double letters occur in a few words in this list: 


	wetter			letter			alloy

	copper

Several words from this list contain affixes. Remember that suffixes and prefixes are affixes. 


	wet + er = wetter		re + quest = request

	re + set = reset		test + ing = testing

	west + ern = western
The words "copper" and "letter" are not made by adding an affix to a root word as is the case for the five examples shown above. Although adding "er" to "cop" would produce "copper" after doubling the "p" in "cop", the meanings of "cop" and "copper" are unrelated and so "cop" is not the root word of "copper". The same can be said for "let" and "letter".

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