character: Engineer Ella
topic: Properties of Different Materials
grade: 4
subject: Reading
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character: Engineer Ella
topic: Understanding Textures and Strengths of Materials
grade: 4
subject: Reading
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character: Engineer Ella
topic: Identifying Materials: Wood, Metal, Plastic
grade: 4
subject: Reading
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character: Engineer Ella
topic: Exploring the Uses of Various Materials in Engineering
grade: 4
subject: Reading
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