This is a great FREE I Have Who Has Game that covers short a words with Real Words and Nonsense Words.
K.RFS.3 3. Know and apply grade-level phonics and word analysis skills in decoding words.
Demonstrate basic knowledge of letter-sound correspondences by producing the primary or most frequent sound for each consonant.
Associate the long and short sounds with the common spellings (graphemes) for the five major vowels.
1.RFS.3 3. Know and apply grade-level phonics and word analysis skills in decoding words.
Decode regularly spelled one-syllable words.