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"Understanding the Southeast and Northwest" Southeast and Northwest PPT courseware
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2023-09-25 18:04:24
"Understanding Decimeters and Millimeters" Decimeters and Millimeters PPT Courseware 3
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"Frequency and Frequency" Data Collection and Processing PPT Courseware 2
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"Frequency and Frequency" Data Collection and Processing PPT Courseware 4
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"Volume of Cuboids and Cubes" Cuboids and Cubes PPT Courseware
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"Development and Utilization of Energy" Chemistry and Life PPT Courseware
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2023-09-25 17:34:08
"Chemical Substances and Health" Modern Life and Chemistry PPT Courseware
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"Conversion and Conservation of Energy" Heat and Energy PPT Courseware
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"Eyes and Glasses" Lenses and Their Applications PPT Courseware 7
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"Quality and Its Measurement" Quality and Density PPT Courseware 4
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2023-09-25 17:33:46
"Energy Crisis and Hope" Particles and Universe PPT Courseware 4
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2023-09-25 17:33:43
"Density and Social Life" Quality and Density PPT Teaching Courseware
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2023-09-25 17:33:37
"Observing and describing minerals (1)" Rocks and minerals PPT download
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2023-09-25 17:31:54
"Observing and describing minerals (2)" Rocks and minerals PPT download
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"Organization and Review" Multiplication and Division PPT Courseware in Tables
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2023-09-25 17:30:12
"Neutralization Reaction of Acids and Bases" Acids and Bases PPT
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2023-09-20 15:18:51
"Chemical Elements and Human Health" Chemistry and Life PPT download
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2023-09-20 15:17:57
"Addition and subtraction of hundreds and thousands" PPT free download
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2023-09-20 15:16:55
"Comparison of Water and Edible Oil" Water and Air PPT
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2023-09-20 15:13:03
"Immunity and Planned Immunization" Infectious Diseases and Immunity PPT Courseware
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2023-09-20 15:12:16
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