This application contains Physics and Chemistry lessons for fourth graders, summaries of all lessons and corrected homework without Internet.
Great summary that helps you understand lessons while memorizing them quickly.
An application that works without the need for the internet and eliminates a pile of paper. You can use this app anywhere without needing a booklet or the like.
Complete summary of all the Physics and Chemistry lessons of the fourth grade.

Summary:

1. Optics
2. Electricity
3. Chemistry
4. Homework
This is a Summarization for educational purposes, not a book so there is no copyright violation.