Edutopia – Anxo Otero 
The wide scope of topics typically covered in intermediate to high-level world language classes requires students to master a lot of meaningful new terms. Given the time constraints students face and the virtually endless number of relevant lexical items, teachers often struggle to integrate vocabulary-developing activities into their daily practice. The problem becomes even more serious when we consider that for vocabulary instruction to be effective it needs to be not just explicit and engaging but frequent—which means running up against those time constraints repeatedly.
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