Math Grade1 Lesson01: “Bigger, smaller” size

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Math Grade1 Lesson01: Size “more than less than less”

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Math Grade1 Lesson02: “Exterior, Interior” location

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Math Grade1 Lesson02: “Front, rear” position

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Math Grade1 Lesson03: Number 1 to 5

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Math Grade1 Lesson03: Number 2 and 3

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Math Grade1 Lesson03: Number 1 to 5

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Math Grade1 Lesson03: Exercises number 1 2 3

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Math Grade1 Lesson03: Number 1 to 5 sorting and vice versa

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Math Grade1 Lesson04: Number 0

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