How does the teacher's activity involving the word "dict" primarily promote vocabulary development?

The activity centered around the word "dict" primarily promotes vocabulary development by helping students understand word roots, which is a powerful tool in deciphering the meanings of related words. The root "dict," meaning to say or declare, serves as a foundation for various vocabulary words such as "dictate," "dictation," and "dictionary." By focusing on this root, students can expand their vocabulary significantly as they learn to identify and understand new words that share this common linguistic origin. This root analysis not only aids in memorization but also enhances comprehension and retention, allowing students to make connections between words and their meanings. Such a strategy is instrumental in building a deeper and more analytical approach to language, which is crucial for proficient reading and communication skills.