Revision notes and summaries are a great way to consolidate your learning and prepare for exams. Here, I will provide you with details on how to find revision notes or summaries for different subjects in the CBSE Class 7 syllabus.

1. NCERT Textbooks:
The first and most important resource for revision notes and summaries is the NCERT textbooks. These textbooks are prescribed by the CBSE board and cover the entire syllabus. They provide a comprehensive understanding of the concepts and topics. You can find these textbooks online on the official NCERT website or on EduRev, an educational platform that offers NCERT solutions and study material.

2. Online Educational Platforms:
Online educational platforms such as EduRev, provide a wide range of study materials, including revision notes and summaries for CBSE Class 7 subjects. These platforms offer curated content from experienced educators and subject experts. You can find subject-wise notes and summaries, which are concise and to-the-point, helping you revise the important concepts effectively.

3. YouTube Channels:
YouTube is a great resource for finding video lessons, tutorials, and revision notes for various subjects. Many educational channels on YouTube specifically cater to CBSE Class 7 students. These channels provide engaging video content that simplifies complex topics and helps in quick revision. Some popular YouTube channels for CBSE Class 7 include "Vedantu Class 9 & 10", "Learnapt", and "Takshila Learning".

4. Mobile Applications:
There are several mobile applications available for CBSE Class 7 revision. These apps offer subject-wise revision notes, summaries, and practice quizzes. Some popular apps include "Toppr", "Meritnation", and "BYJU'S - The Learning App". These apps provide a user-friendly interface and allow you to access study material anytime, anywhere.

5. Study Groups and Forums:
Joining study groups or online forums can be beneficial as you can interact with fellow classmates and share revision notes and summaries. There are various online forums and social media groups dedicated to CBSE Class 7 students. These platforms allow you to ask questions, clarify doubts, and exchange study materials.

Remember to cross-check the information you find with your textbooks and class notes to ensure accuracy. Regular revision and practice are essential for effective learning and exam preparation.