Prefix worksheets are a great way for you to understand how your students are progressing. After you teach some of the basic prefixes, such as "un," "in" and "dis," and the words that go with those prefixes, draft worksheets that list parts of words with their prefixes missing. At the top of the worksheet, list all the possible prefixes that could begin each word. Ask the students to write the proper prefix before each word and then give the worksheet to you when they're finished so that you can mark it.
Flash cards are often used when teaching math concepts, such as multiplication, but you can use them to teach prefixes as well. Write one prefix on one side of each card and then turn it over so the students can't see it. Start a timer for two minutes, flip one card over and have the students write as many words as they can with that prefix. Continue flipping the cards over after two minute intervals. When all of the cards have been turned over, write all of the words the students came up with on the board.
Part of your prefixes lesson plan should also reflect how prefixes fit into full sentences and narrative structures. You can help your students apply their knowledge of prefixes by creating a group story. Begin by listing all of the prefixes you've taught so far and some of the words that go with each prefix. Assign a prefix to each student and ask one student to write the first sentence of the story using her prefix at least once. Ask other students to write the next sentences using their prefixes. Continue until everyone has written one sentence using their prefix.
Teaching and learning prefixes doesn't need to be a boring task. Your students will enjoy themselves and learn prefixes more quickly if you incorporate a game into your lesson plan. One popular game is prefix bingo. Write a list of root words on the board and prefixes that could go with those root words on index cards. Place the index cards in a bag and have the students make their own bingo cards. The cards should have one root word listed on the board in each box. Have each student remove a prefix card from the bag and read the prefix aloud. Students then have to see if they can make words using the words on their board and the prefix. When a student has made a row of words, she calls out "Bingo!"