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Project Origin

Although domestic educational websites offer free resources, most ordinary people still face limited access to information. Some people exploit this by selling these resources, which often contain private watermarks, on certain websites. To address this, I plan to centralize and open-source these resources to promote universal compulsory education and eliminate educational poverty across regions.

Another crucial reason is the hope that overseas Chinese can ensure their children continue to learn about domestic education.

Learning Mathematics

I hope that in the future there will be more people who don't study just for the sake of passing exams.

Elementary school mathematics

Junior high school mathematics

High school mathematics

University Mathematics

Question: How to merge split files?

Because GitHub has a maximum upload limit for single files, files larger than 100MB will be rejected, and files larger than 50MB will trigger a warning. Therefore, files larger than 50MB will be split into multiple files of 35MB each.

Example

Example of a file being split:

  • Compulsory Education Textbook: Mathematics, Grade 1, Volume 1.pdf.1
  • Compulsory Education Textbook: Mathematics, Grade 1, Volume 1.pdf.2

Solution

To merge these split files, simply follow these steps (the same applies to other operating systems):

  1. Download the merging program mergePDFs-windows-amd64.exe to the folder containing the PDF file.
  2. Ensure that the file mergePDFs-windows-amd64.exe and the split PDF file are in the same directory.
  3. Double-Click mergePDFs-windows-amd64.exe the program to automatically merge the files.

Download Method

You can download the file merging program via the following link:

Download file merging program

File and program examples

  • mergePDFs-windows-amd64.exe
  • Compulsory Education Textbook: Mathematics, Grade 1, Volume 1.pdf.1
  • Compulsory Education Textbook: Mathematics, Grade 1, Volume 1.pdf.2

Re-download

  • If you are located in mainland China and have a good internet connection, and want to download it again, you can use tchMaterial-parser project (open source is encouraged) to download it again.
  • If you are located overseas and have slow network communication speeds with mainland China, it is recommended that you use this repository for checkout.

Textbook donation

If this project helps you access educational resources for free, please consider supporting our efforts to promote open education! Your donation will help us maintain and expand this resource repository.

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All PDF textbooks for elementary, middle, high school, and university.

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