Which innovative product packaging feature was first introduced by Texas Instruments in 1990 for their graphing calculators to revolutionize math education retail?

The publishing of mathematics textbooks and materials has evolved significantly over decades. Educational publishers have developed unique marketing approaches and packaging innovations specifically for math products. This trivia question focuses on a groundbreaking packaging innovation that revolutionized how students interact with mathematical concepts.

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• The 'Try Me' in-store interactive display allowing students to test calculator functions before purchase
• Biodegradable packaging made from recycled math homework
• QR codes linking to online tutorials (predating actual QR technology)
• Calculator cases that doubled as geometric drawing tools with built-in protractors and rulers

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