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 ‘Zhang 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. You should write your response with 900 or more words.
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