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"Continuous addition and subtraction" 6-10 understanding and addition and subtraction PPT courseware 2
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2019-02-23 17:00:00
"Internal Energy of Objects" Internal Energy and Heat Engine PPT Courseware 2
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"Energy" Energy and Sustainable Development PPT Courseware 2
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"Electric Energy and Electric Power" Electric Energy and Electric Power PPT Courseware
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"Addition and subtraction estimation" PPT courseware
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2019-01-16 21:00:00
"Non-abdication subtraction" PPT courseware
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2019-01-26 10:00:00
Flash animation courseware of abdication and subtraction within 20 in "Ten Minus 9" 3
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2021-12-20 14:10:03
"Checking of Addition and Subtraction" PPT courseware for addition and subtraction within 10,000
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2019-02-08 23:00:00
"Energy, Environment and Sustainable Development" Energy and Energy Conservation Law PPT courseware
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Traditional festival Dragon Boat Festival class meeting theme PPT template
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Black minimalist labor day festival introduction PPT template
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Fashionable, fresh, water-saving and water-saving PPT
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Save water resources and save water PPT background picture
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2019-02-06 09:00:00
"Transmission of Electric Energy" Where does electric energy come from PPT courseware
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2023-10-05 09:23:40
"Nuclear Energy" Energy and Sustainable Development PPT Courseware 2
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2023-09-25 18:19:39
"Nuclear Energy" Energy and Sustainable Development PPT Courseware 3
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2023-09-25 18:19:38
"Conversion and Conservation of Energy" Utilization of Internal Energy PPT
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"Energy in Life" Energy and Life PPT Courseware
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2023-09-25 18:15:56
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