Flossy Words are one of the short vowel variations covered at the end of the Sound Out Words section of the Phonics Pow Toolkit. (II.c) The letters f, l, s, and sometimes z often (but not always) double at the end of one syllable words with a short vowel.
Turn the drill off in class or it will buzz
WATCH videos and PLAY games at the Flossy Words tutorial at Wakelet.
PLAY a Flossy wordsearch online.
Flossy words are included in the bookmarks with pattern sorts for short vowel variations and can be downloaded for free. The Bee Buzz game and free Flossy Word Treasure are available at Teachers Pay Teachers.
There are some exceptions to the Flossy Word guideline. When the final s makes the sound of /z/ like in is, the letter s does not double. In the words: if, this, us, bus, yes, and gas the final letter does not double. In a few words, other letters double, like: odd, add, and egg.
The letter a can say short o. The -all word family is special. When the letter a comes before -ll, it makes the sound of a short ŏ, like in ball. WATCH a Prezi, a Super Simple turn and learn video, and the all word family video from 4 minute phonics.