"Brain Abacus Complete Tutorial (Advanced)" focuses on multiplication and speed arithmetic, discussion of high-level multiplication and division, and negative number operations. The content is divided into two parts, namely a tutorial and a two-handed bead solution demonstration device. The interface design is easy to learn and understand.

Rich interactive graphic explanation:
The interface design is simple and easy to learn and understand. Rather than relying solely on text to explain, each concept is provided with detailed diagrams for comparison and explanation, eliminating language misunderstandings and obstacles, explaining difficult theories more effectively, and simplifying complexity Process, explain each complex key in a simple way. At the same time, each classroom is covered with a large number of examples, and each example has a step-by-step detailed demonstration, making self-study easy.

Demonstrator for two-hand dialing beads:
The bead demonstrator allows us to enter a number or a calculation formula. The system will automatically demonstrate the bead and calculation step by step on the abacus and explain in detail. We can also pause the current step at any time and carefully observe the description, or change to another A new round of demonstrations on topics or figures.

Analog abacus:
With the analog abacus so that we can start calculations at any time, the built-in analog abacus in the classroom allows everyone to follow the classroom at any time and practice the method of moving beads with both hands on the abacus. You can either follow the graphical steps on the page to synchronize the calculation, or you can try the calculation once, and then check with the corresponding demonstration steps.

Content features:
-In-depth study of advanced abacus and mental arithmetic topics
-All kinds of multiplication speed arithmetic
-Multiplication is a trick
-Abacus decimal division
-The trap of rounding
-Handling of negative numbers in abacus
-Demonstrator judges the best speed algorithm according to the question
-Use both hands to dial beads to stimulate the right brain function
-Further assist in breaking away from the physical abacus and sublimate the abacus mental arithmetic skills

More detailed introduction https://www.hamsterforce.com/MentalAbacusTC.html