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Mastering addition and subtraction within the studied range using decimal composition.

Exploring properties of subtraction, such as the impossibility of subtracting a larger number from a smaller one at this stage, and subtracting zero. Mastering addition and subtraction within the studied range

Measuring and constructing segments of a specified length. Teaching Objectives The lesson is designed to develop several key competencies: Mastering addition and subtraction within the studied range

Encouraging pair work and mutual assistance among students. Mastering addition and subtraction within the studied range

Comparing and classifying numerical expressions and solving text-based problems involving addition and subtraction.

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Quick drills to reinforce number sequences and basic facts up to 10 or 20.