Exercises to master the abacus technique. Calculations with the abacus in the range 1-100
Performing simple operations on the abacus (without using logical formulas when the coils on the bar are sufficient to perform arithmetic operations).
Computing mentally in the range 1-100 with simple operations on single and identical two-digit numbers
Using methodologically designed concepts of varying difficulty (little friends), complex operations on the abacus in the range 1-100, involving exercises with logical formulas, when the coils on the bar are insufficient
Number recognition using imaginary cards in the range up to 100, where any number is learned and remembered as a picture made of coils.
The concept of big friends
Calculation of three-digit values on the abacus using simple operations
Mental calculation with simple operations on one-digit and two-digit values
Calculation using abacus: using minor, major and double friends in complex operations
Mental arithmetic: complex operations on single-digit numbers using minor and major friends
Recognizing three-digit numbers with imaginary cards
Standards: 2,3,4,5,6,7,8,9. Adding and subtracting numbers
Calculation on the abacus: with complex operations on 1,2,3-digit values using double friends
Mental arithmetic on 1.2-digit values using double and major friends
Mental calculation: with simple operations on three-digit values
Standards: 10, 20, 30, 40, 50, 100 It should be noted that at the third level, all complex operations are practiced while performing standards, during which children have to use minor, major and double friends in sequence, both on the abacus and under imagination. Focusing, quick and flexible mind lead to timely fulfillment of such standards, being one of the primary and important tasks both to proceed with studies and learn the subject at the following levels