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"The Earth and Its Seven Brothers" PPT courseware
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"Properties of Chlorine" Chlorine and its compounds PPT
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"The Earth and Its Seven Brothers" PPT courseware
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"Iron Salts and Ferrous Salts" Iron and its compounds PPT
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"Sublimation and Sublimation" Material Form and Its Changes PPT Courseware 3
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"Internal Energy and Its Changes" Heat and Energy PPT Courseware 2
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"Internal Energy and Its Changes" Heat and Energy PPT Courseware 4
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"Elements, oxides and hydroxides of iron" Iron and its compounds PPT
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"Iron and its Compounds" PPT
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"Force and Its Effects" Force and Motion PPT Courseware 2
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"Carbon and Its Compounds" Fuel and Combustion PPT Courseware 2
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"Properties of Chlorine" Chlorine and its compounds PPT
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"Conditions and Applications of Floating and Sinking Objects" Buoyancy PPT (Lesson 2)
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"Conditions and Applications of Floating and Sinking Objects" Buoyancy PPT (Lesson 1)
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"Bring Her Eyes" PPT
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"Microscope and Telescope" Lens and Its Application PPT Teaching Courseware
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《Sodium oxide and sodium peroxide》Sodium and its compounds PPT
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"Hello!" School and Friends PPT teaching courseware
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"Active Metal Element - Sodium" Sodium and its compounds PPT
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