The 'Words by Heart' lesson plan primarily focuses on mastering the spelling of high-frequency words through interactive tasks and exercises.
The 'Words by Heart' lesson helps improve spelling skills through various tasks that involve listening to sounds, writing corresponding words, checking their spellings, and identifying correctly spelled words from a given set.
Post-session activities in the 'Words by Heart' lesson plan include coming up with everyday spoken words that students aren't sure how to spell and practicing writing words they had difficulty with during the session.