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"Boy, Girl and Teacher" School and Numbers PPT courseware
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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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"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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"Energy Crisis and Hope" Particles and Universe PPT Courseware 4
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"Density and Social Life" Quality and Density PPT Teaching Courseware
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"Observing and describing minerals (1)" Rocks and minerals PPT download
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"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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"Neutralization Reaction of Acids and Bases" Acids and Bases PPT
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"Chemical Elements and Human Health" Chemistry and Life PPT download
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"Addition and subtraction of hundreds and thousands" PPT free download
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"Comparison of Water and Edible Oil" Water and Air PPT
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"Immunity and Planned Immunization" Infectious Diseases and Immunity PPT Courseware
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