Addition & Subtraction

Makes number concept and mental arithmetic skills using an abacus of the kindergarten & elementary school students fast

[Hi Abacus Lesson 1]is an innovative program that makes number concept and mental arithmetic skills using an abacus of the kindergarten & elementary school students fast, improves correct 'numbers concept and calculation ability'.

[Hi Abacus Lesson 1] is different from calculating with paper and pencil. It is a program that can calculate addition. subtraction, multiplication and division with mental arithmetic skills using an abacus 2~3 times as quickly, easily and with fun.

[Hi Abacus Lesson 1] Improves IQ by improving mental arithmetic ability, calculation ability, logicality, and thinking skills through learning training with mental arithmetic skills using an abacus.

Learning Target

## 1 | Learning is possible from the age of 4 |

## 2 | Students who wants to improve calculation ability in the short term |

## 3 | Students who calculation ability falls slightly as elementary school lower graders |

## 4 | Students who are often wrong in operation calculation mistakes and problems that know |

## 5 | Students who lose interest and are not confident in math |

## 6 | Students who calculation ability is better than others from childhood |

## 7 | Students who want to build mental arithmetic skills in elementary school |

Lecture configuration

Consists of total 12 levels(40 lessons) and can study weekly.

Level | Learning Content |
---|---|

1 |
Lesson 1- Get to know number and place on the abacus to try Lesson 2- Addition from 1 to 4 Lesson 3- Subtraction from 1 to 4 Lesson 4- Mixed addition and subtraction up to 4(plus, minus 1.2.3.4) |

2 |
Lesson 5- Addition from 5 to 7(plus 5,6,7)
Lesson 6- Addition from 8 to 9(plus 8,9) |

3 |
Lesson 7- Subtraction the number to 9(from 1 to 5)
Lesson 8- Subtraction the number to 9(from 6 to 7) Lesson 9-Subtraction the number to 9(from 8 to 9) Lesson 10- Mixed addition and subtraction up to 9 |

4 |
Lesson 11-Friend number of addition for 5(plus 1, 2)
Lesson 12-Friend number of addition for 5(plus 3, 4) |

5 |
Lesson 13- Friend number of subtraction for 5(minus 1, 2)
Lesson 14- Friend number of subtraction for 5(minus 3, 4) |

6 |
Lesson 15- Addition: Complementary numbers for 10(plus 1, 2)
Lesson 16- Addition: Complementary numbers for 10(plus 3, 4) Lesson 17-Addition: Complementary numbers for 10(plus 5, 6) Lesson 18-Addition: Complementary numbers for 10(plus 7, 8, 9) |

7 |
Lesson 19- Subtraction: Complementary numbers for 10(minus 1, 2)
Lesson 20- Subtraction: Complementary numbers for 10(minus 3, 4) Lesson 21- Subtraction: Complementary numbers for 10(minus 5, 6) Lesson 22- Subtraction: Complementary numbers for 10(minus 7, 8, 9) |

8 |
Lesson 23- Friend number of subtraction for 5(2)(minus 1, 2, 3, 4)
Lesson 24- Addition using 10&5(plus 6, 7, 8, 9)-Figures with the shape Lesson 25- Subtraction using 10&5(minus 6,7,8,9,)-Figures with the shape |

9 |
Lesson 26- Mixed calculation 2 digit &1 digit
Lesson 27-2 digit addition(1) - (the answer is less than 50) Lesson 28-2 digit subtraction(1) - (the answer is less than 50) Lesson 29-2 digit addition(2) - (the answer is more than 50) Lesson 30-2 digit subtraction(2) - (the answer is more than 50) |

10 |
Lesson 31- 2 digit addition(3) - (the answer is between 50 and 100)
Lesson 32-2 digit subtraction(3) - (the answer is between 50 and 100) Lesson 33-Double digit addition(the answer is more than 100) Lesson 34-Double digit subtraction(the answer is near 100) |

11 |
Lesson 35-Addition & subtraction of 5 rows(1)
Lesson 36- Addition & subtraction of 5 rows(2) |

12 |
Lesson 37- 3 digit addition(1)
Lesson 38- 3 digit subtraction(1) Lesson 39- 3 digit addition(2) Lesson 40- 3 digit subtraction(2) |