I Spy in the Sky - Leap Frog Author:Suzanne L. Barchers, Dana Regan (Illustrator) One of six books from the Tag Reading System Learn to Read Book Set 2 - Long Vowels, Silent E and Y. Each book has three modes: Say it! (touch words with Tag Reader to hear them read aloud), Spell it! (touch letters to hear how words are spelled), and Sound it! (touch letters to hear them sounded out)