Prefixes: Not, Again, Before, Wrong

Un-, dis-, non-, in-/im-/il-/ir- (not), re-, pre-, mis-, and how im- and il- match the root (impossible, illegal).

Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.

What children learn in Level 9

Welcome to the Root Ruins! Long ago, people built words from parts, the way builders stacked stones. Let's dig them up. A prefix is a part at the front of a word that changes its meaning.
Some prefixes mean not: un, dis, and non. Unfair means not fair. Dishonest means not honest. Nonfiction means not fiction.
In means not, too. It changes its spelling to match the root: im before b, m, or p, like impossible. Il before l, like illegal. Ir before r, like irregular.
Re means again: rewrite, replay. Pre means before: preview, preheat. Mis means wrongly: misspell, misplace.
To read a word with a prefix, cover the prefix, read the root, and then add the meaning. Mis, read: read wrongly!
Your turn! Sort these words by what their prefix means.

Georgia's K-12 English Language Arts Standards:

4.L.V.2.a — Deconstruct words using knowledge of Greek and Latin roots, root words, and affixes to determine meaning. (I)
4.F.P.4.c — Decode and encode words with common prefixes and suffixes.