It is the most frequent of all English vowels because historically it has replaced many unstressed vowels. It has a restricted distribution: it only appears in unaccented syllables.
ACTIVITIES:
1. Watch this video about how to pronounce schwa and practice several times with the examples given in this webpage:
2.SCHWA PREDICTION
3. Pronunciation practice:
3a. Open this chart, click on vowels-monophthongs, then click on central: listen and practice the schwa.
3b.Watch this video and practice.
3c. Listen, read and practice in this webpage.
4. Visit this ESL pronunciation web page and do the exercises provided to practice the schwa.