Which innovative pricing strategy did Texas Instruments use in the 1990s that transformed the graphing calculator market and established the TI-83/84 as the dominant educational math tool?

Mathematics publishing and educational tools represent a significant market with unique challenges. Companies in this space must balance academic rigor with accessibility and apply sophisticated pricing strategies to reach different market segments. This poll tests your knowledge of how a famous mathematics product revolutionized an entire market segment through its innovative pricing approach.

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Educational institution bulk pricing that offered free teacher devices for every 30 student calculators purchased
Annual subscription model where students paid a small monthly fee rather than purchasing the device outright
Dynamic pricing algorithm that adjusted calculator costs based on geographic educational spending patterns
Freemium model where the calculator hardware was free but advanced mathematical functions required in-app purchases