character: Creative Chris
topic: Innovative Designs for Strong Bridges
grade: 4
subject: Reading
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character: Engineering Ellie
topic: Building Bridges with Eco-Friendly Materials
grade: 4
subject: Reading
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character: Structural Sam
topic: The Importance of Arch Design in Bridges
grade: 4
subject: Reading
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character: Bridge Builder Betty
topic: Exploring Different Types of Bridges
grade: 4
subject: Reading
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