This activity is one I use often with my students who substitute a "W" for "L" or "R" sounds at the beginning of words. I present a strip of pictures with minimal paired words and have the student "read" them, reminding them to think about and feel what their tongue and lips are doing to make the sounds in the words.
10 strips of minimal pairs for "W" and "L"
10 strips of minimal pairs for "W" and "R"
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