PREFIXES Lesson Objectives Identify and explain the meanings

PREFIXES

Lesson Objectives • Identify and explain the meanings of the 5 prefixes taught. • Differentiate between words which are formed with the addition of prefixes and words which are not. • Provide at least 2 examples of words formed using each prefix.

What is a Prefix? • A prefix is a group of letters which you can add to the beginning of a root word to change or reverse the meaning of the word. mis + Prefix behave Root Word = misbehave New word

What is a Root Word? • A root word stands on its own as a word but you can make new words from it by adding beginnings (prefixes). dis + advantage = disadvantage Root Word re + do Root Word = redo

Are these examples of words with prefixes? NOT a word with a prefix dis + turb = disturb re + duce = reduce NOT a word with a prefix

Do you know… • Every prefix has a meaning. • Generally, when you add a prefix to a root word, the spelling of the prefix and the root word stay the same. • While there are no fixed rules to help you remember which prefix to use, knowing the meaning of the prefix can help.

What we’ll be learning today… Ir- In- Un- Dis- Im-

Un • Means not. Example Meaning of Example Unreasonable not reasonable Uncomfortable Not comfortable Unwell Not (feeling) well

In • Another prefix meaning "not" or "the opposite of". Example Meaning of Example Unreasonable not reasonable Uncomfortable Not comfortable Unwell Not (feeling) well

Dis • Means not or opposite of. Example Meaning of Example Disagree (does) not agree Dislike (does) not like Disappear Opposite of appear

Are these words with prefixes? disturb interest under

Im • Means not as well • Use before words starting with ’m’ but also front of words starting with ’p’ Example Meaning of Example Impatient Not patient Impossible Not possible Immobile Not able to move

Ir • Means not as well • Use before words starting with ’r’ Example Meaning of Example Irresponsible Not responsible Irregular Not regular Irrational Not rational (not reasonable)

Are these words with prefixes? India Internet Irate

Questions?