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.
Availability of sentences
Sentences could be made available like a technology tree in a construction and management simulation, making some groups of sentences only available after a certain quality of writing had been established or certain groups of sentences or sub-topics had been selected. The intended psychological effect is to motivate and to teach continual refinement of text, including the removal of obsolete sentences, and reflection about phrases the child can understand but might not have used (passive vocabulary vs. active vocabulary).
Database
A database could initially be filled with sentences from selected Wikipedia articles, including sentences from similar articles or topics and variants of sentences which may not be appropriate for the essay.
Modes
Different modes could allow very low error rates or very high (natural) error rates. With very low error rates a child would primarily train the thought processes required for the top level design of the essay (or another exercise) while with natural error rates the child could still benefit from proposals but would train all the skills required to prevent spelling mistakes and grammatic mistakes, almost as if writing the text unaided.
Math trainer
One could implement a math trainer where pupils had to pick transformations of an equation or aspects of transforming operations from a database of possible ideas (most of them wrong or out of context, of course), which would allow the math trainer application to make a very thorough analysis of the transformations that had been applied appropriately and correctly.
