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Readers 11-20 systematically introduce many new digraphs (e.g sh and er). Used together with the basic letter sounds (a for apple, b for bat etc.), they enable students to effortlessly decode large numbers of words. Readers 11-20 keep things simple and introduce only one new digraph (e.g. sh) per reader. This makes for sure and steady progress. Here we introduce the first 3-letter digraph (all). As usual, to aid memory it is used many times throughout the Reader. Some single-letter new sounds like y as in by or e as in he are also taught. This helps children read many common words. All new sounds (e.g. ar as in Mars) and special words (like space) are learned in the context of a story. This makes them easy to remember.
