Final answer:
For practicing sound-symbol correspondence, using 15-30 words is recommended to effectively reinforce the sound in various contexts without overwhelming learners.
Step-by-step explanation:
When practicing with a given sound-symbol correspondence, it's generally recommended to use about 15-30 words. This provides a sufficient variety to practice the sound-symbol relationship while not overwhelming the learner. Using too few words might not give enough exposure to the correspondence, whereas too many might become too challenging.
A range of 15-30 allows for repeated exposure to the sound in different contexts, which can help reinforce its pronunciation and recognition. It's important to have a balanced approach to ensure effective learning and retention.