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Comprehensive Definition
Academic Vocabulary (or Tier 2 Words) refers to the high-frequency words found across various academic disciplines. They are words of sophisticated generality—meaning they are not specific to a single subject like science or math (Tier 3), nor are they basic, everyday conversational words (Tier 1). Instead, Tier 2 words appear frequently in textbooks, assignments, exams, and high-level spoken discourse, making them essential for comprehension in the middle and upper primary years and beyond.
Mastering Academic Vocabulary is crucial for literacy development because these words form the bridge between everyday spoken language and the more formal, written language of schooling. They are often the key to understanding complex instructions, making inferences, expressing nuanced ideas, and comprehending text at the Language and Comprehension level.
Practical Example
In a science class, a teacher might use a Tier 3 word like photosynthesis (subject-specific). To explain it, the teacher might use Tier 2 words like 'analyse,' 'predict,' 'determine,' or 'conclude.' The students need to understand these Tier 2 words to follow the instructions and successfully engage with the learning task, regardless of the science topic.
FAQs
Q: What are the three Tiers of Vocabulary, and why is Tier 2 so important?
A: The three tiers are: Tier 1: Basic, common words (e.g., happy, walk). Tier 2: High-utility, cross-curricular words (e.g., infer, compare). Tier 3: Low-frequency, domain-specific words (e.g., chromosome, legislative).
Tier 2 is crucial because it accounts for the majority of vocabulary growth and allows students to access increasingly complex texts and articulate abstract concepts.
Q: How do I select which Academic Vocabulary words to teach?
A: Effective selection usually follows two criteria: utility and instructional potential. Select words that are: 1) likely to be encountered in many different texts, and 2) have a high potential for rich instruction (i.e., they are not easily defined by context alone, like exclaimed, but require deep explanation, like imply).
Q: Should Academic Vocabulary be taught in isolation or in context?
A: Academic vocabulary should be taught explicitly, systematically, and repeatedly, integrating both isolation and context. Instruction should start with a clear, child-friendly definition (isolation) and then immediately move to providing multiple examples and non-examples in authentic sentences and texts (context).
