2.3.2. Content-related vocabulary words
Researchers selected 59 science- and 35 social studies-related vocabulary words from a total of 36 books (two books introducedper week and connected by theme/topic) and taught within the thematic units so that vocabulary knowledge was organized by lexicalsets (e.g., water, liquid, frozen) to assist students in deeply processing words and connected concepts. Vocabulary words were visually represented in the books and important for later learning as words were often identical to science and social studies vocabulary lists developed by state and local school districts for teachers of young children. Additional vocabulary selection criteria included that the words were related to important science and social studies concepts, were likely to appear in a wide variety of texts, and were less likely to be learned through everyday conversations for children from high poverty backgrounds (Beck, McKeown, & Kucan,2002; Stahl, 1991). Although three words were typically selected from each text for a total of six words taught per week, early lessons introduced only two vocabulary words per book to allow the young children to become acclimated to the shared-book reading process.
2.3.2. Content-related vocabulary words Researchers selected 59 science- and 35 social studies-related vocabulary words from a total of 36 books (two books introducedper week and connected by theme/topic) and taught within the thematic units so that vocabulary knowledge was organized by lexicalsets (e.g., water, liquid, frozen) to assist students in deeply processing words and connected concepts. Vocabulary words were visually represented in the books and important for later learning as words were often identical to science and social studies vocabulary lists developed by state and local school districts for teachers of young children. Additional vocabulary selection criteria included that the words were related to important science and social studies concepts, were likely to appear in a wide variety of texts, and were less likely to be learned through everyday conversations for children from high poverty backgrounds (Beck, McKeown, & Kucan,2002; Stahl, 1991). Although three words were typically selected from each text for a total of six words taught per week, early lessons introduced only two vocabulary words per book to allow the young children to become acclimated to the shared-book reading process.
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