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"Blooming and Fruiting" Growth Changes of Plants PPT
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"Iron is Rusty" PPT teaching courseware on changes in matter
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"Factorization using common factor method" PPT courseware
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"Interesting and Useful Physics" into the physics PPT courseware
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"Phenomena Accompanying Chemical Changes" PPT download of changes in matter
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"Causes of Excessive Current in Household Circuits" Lifestyle Electricity PPT Courseware
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"Classification of Substances" Classification and transformation of substances PPT
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