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EiJ Concept: Median Income

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This essay explains the concept of "median income" and provides resources for teaching it in various contexts.

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The product is designed in the way that the portable bridge can be expand from a folded mode to a bridge length takes up to across a river. It expanded in a scissor-like (90° turned scissor lift) action, then slides out the decks with end-to-end to provide platforms for vehicles.

This design is “Made of aluminum alloy and steel, it’s lightweight and easy to transport, yet sturdy enough for cars to cross.” [1]