The schwa sound ? can be spelled with the letters a, e, or o. Your students will discover that this sound can be found in many unstressed syllables. This activity reinforces this sound spelling through varied activities where your students will read, write and then organize words by the letter making the schwa sound. They will also insert missing vowels and use proofreading marks to correct ten mistakes in a word problem and then solve the problem. Finally, your students will fit the challenge words into a puzzle.