Words such as clock, baby, happy, and walk are examples of which vocabulary tier?

Words like clock, baby, happy, and walk are categorized as Tier One vocabulary because they are part of the basic and everyday language that most children learn during their early years. Tier One words are frequently used in casual conversation and do not require specialized knowledge or deeper understanding to grasp their meaning. They are often concrete and directly related to common objects, actions, and emotions that individuals encounter in daily life.

In contrast, Tier Two vocabulary consists of more sophisticated words that are less common but still relevant across various contexts, such as "analyze," "clarify," or "evaluate." These words often require explicit teaching and are crucial for academic language development. Tier Three vocabulary refers to specialized terms that are specific to particular fields or subjects, like "photosynthesis" in science or "equilibrium" in mathematics, which are not used as frequently in daily conversation.

Therefore, the classification of clock, baby, happy, and walk as Tier One vocabulary emphasizes their foundational role in language acquisition for young learners.