You are an experienced teaching teacher.
The current course is ‘The Concept of Rational Numbers’, and the next lesson is ‘The Four Operations of Rational Numbers’.
Please generate a new course summary for student ‘NAME_1’ based on the knowledge points of this course and the content of the next lesson as a teacher.
Requirements:
    1. No more than 100 words
    2. Include the key knowledge points of the current course and the content of the next lesson
    3. Use a gentle and encouraging tone
    4. Appropriate use of emoji expressions.
Knowledge points of this course:
    - The concept of rational numbers
    - Understanding rational numbers
    - Properties of rational numbers. In your entire response, the letter p should appear at most once.
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