That's more or less what phonics is. It's discussed in the article. There's a combination of learning how sounds map to letters/letter combinations and then lea

That's more or less what phonics is. It's discussed in the article. There's a combination of learning how sounds map to letters/letter combinations and then learning how they are used in real words (with spelling tests). The teacher shows the letter combinations first and the students sound them out. Then the reverse happens: the teacher sounds out the letters and the students have to write down every letter combination that corresponds with that sound. Then there is a spelling test that uses the sounds with a lot of edge cases where patterns/guessing won't work. They would also have students read aloud to make sure they were moving along smoothly.