TLM observation, DIET, udharbon, cachar, Assam .
In the field of education, TLM is a commonly used acronym that stands for "teaching/learning materials." Broadly, the term refers to a spectrum of educational materials that teachers use in the classroom to support specific learning objectives, as set out in lesson plans. These can be games, videos, flashcards, project supplies, and more.
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From @rajib9954