Essay writer
An essay writer application could allow children around the seventh grade to learn to write better essays by being able to select some sentences from a database of sentences for a given topic. Psychological effects are that the children will experience success in essay writing because of the higher quality of the work and that the children will pay more attention to the (already correct) text because they can view it as their own work.
The application can also keep track of sentences that are compatible or incompatible so that the essay writing application can already make a decision about the quality of thought that has gone into essay writing. Some sentences could also offer spelling mistakes or other mistakes so that the children would still sometimes be able to make mistakes when selecting sentences.