22.2.18 AST Prek4 U6 Earthquakes
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22.2.18 AST Prek4 U5 A world of animals
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22.2.16 AST Prek4 U4 Recycle,Reuse, and Reduce
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22.2.16 AST Prek4 U3 Earth is our home
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22.2.15 AST Prek4 U2 The World's Best
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22.2.15 AST Prek4 U1 Countries in the world
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22.2.14 AST Prek3 U12 Ballet Dance
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22.2.14 AST Prek3 U11 What do Artists Do?
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22.2.13 博物馆
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22.2.13 Plants
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