In the context of the Mathematics exam structure shifting strongly towards assessing thinking capacity and increasing practical application problems, the role of handheld calculating tools requires a corresponding change. No longer purely a basic calculating device, the CASIO fx-880BTG PLUS calculator series is establishing a new algorithmic structure, helping students minimize execution steps to focus entirely on exam-solving strategies. 

The CASIO fx-880BTG PLUS calculator was launched with a series of new upgrades, closely following the current General Education curriculum.

The core feature that helps the device optimize time lies in the deep integration of advanced processing functions according to the current General Education curriculum. From allowing the processing of grouped statistical data, total probability, and Bayes' formula, this calculator series is also designed with specialized calculation modules for geometry. Students can exploit mathematical problems such as calculating the distance between 2 points, the distance between a point and a line, as well as writing plane equations by directly entering point coordinates. In plane geometry, algorithms for solving triangles, applying Heron's formula, or calculating the area of a sector are optimized to return results in precise fraction or radical formats, directly serving multiple-choice questions that require absolute values. 

However, for users to quickly master the technology and exploit this entire new feature system, having a scientific approach is extremely necessary. Recognizing that practical need, BITEX's Center for Educational Application Research has collaborated with a team of experienced math experts and teachers working at leading high schools and universities to conduct a research project supporting teaching and learning activities. The result of this professional collaboration is the book “Breakthrough in Technology & Features with CASIO fx-880BTG PLUS Calculator” valued at 99,000 VND, which is currently being given away directly to learners when they own this new generation calculator. 

BITEX has specially compiled a guidebook for CASIO fx-880BTG PLUS users.

The outstanding value of this exclusive guidebook lies in its methodical approach, not following the beaten path of mere technical operation manuals. The entire content is structured to comprehensively systematize all the deep refinements of the CASIO fx-880BTG PLUS series, helping readers gain a clear technological insight. The document analyzes in detail how to apply the tool to each specific Mathematics topic, clearly dividing them according to the knowledge flow of each grade level from middle school to high school. 

The book's content consists of practical and scientific instructions for users to easily explore.

In particular, learners will be guided on how to link the logical flow of the exam questions with the built-in features, thereby forming quick reflex thinking, minimizing cumbersome intermediate transformation steps, and significantly saving test-taking time. The combination of a standard supporting tool and a methodical thinking-oriented document creates a comprehensive educational solution, helping students actively master knowledge before highly selective exams. This professional solution support program and special edition giveaway are applied in practice in the market until the specified quantity of gifts runs out.