Even in secondary education, there are students who simply struggle with written language. The materials in this volume specifically support these students. It addresses the most common sources of errors, such as letter confusion, double consonants, or vowel lengthening. Numerous illustrations clarify the respective spelling rules without many words. The principle of similarity inhibition is taken into account, with additional contrastive exercises included in this volume. Here, students solve comparative tasks and must decide, for example, whether a word is spelled with "i" or "ie." These worksheets are clearly marked, allowing you to easily decide whether to work contrastively with very weak students. The built-in thinking and logic tasks not only train precise text comprehension but also provide a break.