Which innovative packaging approach did Mathematica adopt in 2018 that increased their calculator sales by 45% and won a Design Excellence Award?

In the world of mathematics education products, packaging design plays a crucial role in brand identity and user experience. Geometric shapes, mathematical symbols, and clever visual representations help these products stand out in the educational marketplace. This trivia question explores how one famous mathematics product manufacturer used innovative packaging to revolutionize their brand recognition and market position.

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Introducing the 'Golden Ratio' box design with proportions of 1:1.618 that could be folded into multiple geometric learning tools
Creating biodegradable packaging made from recycled textbook paper that included printed practice problems
Developing augmented reality packaging that revealed 3D geometric models when viewed through their companion app
Implementing a subscription model where calculators arrived in collectible cases featuring famous mathematicians