Step 17.
10 Collect and Teach
Step 18.
Addition to 10
Step 19.
Subtraction from 10
Step 20.
Numbers up to 19
Step 21.
Order of the dozens
Step 22.
(tens)+(how many), (tens)-(how many)
Step 23.
Addition using 10
Step 24.
Subtraction using 10

▶ Are you having trouble explaining the principles of operation in words? We've made it intuitively understandable!

The principles of addition and subtraction are implemented as visual formula models that are easy for children to understand, so that children can understand the principles of operations on their own without their mother having to explain them one by one.


▶ Understand and finish in one go? Repeat in various forms!

It is better to tell children repeatedly because it is difficult for them to understand everything at once.
The same addition is also learned repeatedly in various ways, such as ① folding fingers, ② putting them in a 5×2 box, ③ connecting connecting models, ④ using a collecting machine, ⑤ using dots on domino cards, and ⑥ counting by jumping over a number line.
By practicing one topic with various computational visualization formula models, you can sufficiently learn the principles of computation without getting bored.

▶ Even the use of operations in math textbooks!

Beyond basic calculation problems, teach me the meaning of mathematical terms related to operations, how to express them accurately using mathematical terms, how to interpret formulas expressed in symbols, and how to express sentences as formulas, covering areas where operations are used.
Difficult math problems become easy and your math confidence increases.