Understanding Tiered Vocabulary
We know that vocabulary knowledge influences fluency, comprehension, and student achievement. Vocabulary plays an even more important role in understanding nonfiction and informational text. It has been estimated that 80% of comprehension in nonfiction is dependent upon understanding the vocabulary.
Tiered Vocabulary is an organizational framework developed by Isabel Beck and Margaret McKeown for categorizing words and suggests implications for instruction.
Tier 1
Tier I words are basic, everyday words that are a part of most children’s vocabulary. These are words used every day in conversation, and most of them are learned by hearing family, peers, and teachers use them when speaking. Some examples of Tier 1 words are: big, small, dog, family, boy, etc.
Tier 2
Tier 2 words include frequently occurring words that appear in various contexts and topics. These are general academic words and have high utility across a wide range of topics and contexts. Another way to think of Tier 2 vocabulary is as cross-curricular terms. For example, the term “express” frequently appears in Science, Social Studies, and English texts. Some examples of Tier 2 words are: contrast, generate, isolate, exhaust, process.
Tier 3
Tier 3 words are domain specific vocabulary. Words in this category are low frequency, specialized words that appear in specific fields or content areas. We anticipate that students will be unfamiliar with Tier 3 words. Beck suggests teaching these words as the need arises for comprehension in specific content areas. Some examples of Tier 3 words are: tectonic plates, alliteration, mitosis, imperialism, isthmus.
Like thinking about words? Have you ever multi-slacked?
Here is an interesting Ted Talk about words...
Here is an interesting Ted Talk about words...