Vocabulary.com - 14 Key Prefixes in Vocabulary Word Puzzles

What is a value of a PREFIX? How did we choose the 14 prefixes?
ANSWER:
According to Richard E. Hodges of the University of Puget Sound in a booklet titled: "Improving Spelling and Vocabulary in Secondary School" published by the NCTE in 1982; page 30:

"If you were to examine the 20,000 most used English words, you would find that about 5,000 of them contain prefixes and that 82% (about 4,100) of those words use one of only fourteen different prefixes out of all the available prefixes in the language."

Vocabulary.com wants you to make these PREFIXES a part of your Root-A-Week program! We created 28 prefix puzzles at grade level for each of these 14 "important" prefixes (and eight words at grade level for each prefix, making a total of 112 words):
ab -ad - be - com - de - dis - en - ex - in - pre - pro - re - sub - un

Directions:
1. Determine the meanings of each prefix.
2. After you have learned the meanings of the prefixes and studied the words, you are ready to solve the vocabulary puzzles. Go to each PUZZLE LINK. Letter "A" indicates a more elementary level and letter "B" is more difficult.
3. For each of the 14 prefixes there is a list of all eight words, with their grade levels, at the bottom of this page.

Happy puzzling!

Key Prefix Puzzles with word choice by grade level are listed below.
Puzzles for these INITIAL SIX KEY PREFIXES (with all selected words) will be "LIVE" by 9/10/06.

Feel free to make a copy of the words and puzzles for use at home or in the classroom! Thank you for giving us attribution.
Key Prefix Puzzles with word choice by grade level are listed below.
Puzzles for the REMAINING EIGHT KEY PREFIXES (with all selected words) will be "LIVE" by 9/30/06.
Feel free to make a copy of the words and puzzles for use at home or in the classroom!
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    WORD LIST: -- 8 words (and grade level) for each of the initial 6 prefixes. These 12 puzzles now available as of 9/16/06.

    WORD LIST: -- 8 words (and grade level) for each of the remaining 8 prefixes. These 16 puzzles will be available by 9/30/06.

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