- What time, what time is 30 minutes?
- What time and what minute

1.
Focused practice on areas of weakness
Unlike other areas such as numbers and operations, where you have to build up from the basics step by step before you can expand to the next level, the areas of geometry and measurement are mostly independent in their content, so you can sufficiently complete your learning by focusing on practicing only the areas you are lacking.

Select the areas you are lacking in from the recently released "Geo-yeok Mathematics Geometry and Measurement" and practice them intensively.
You will gain skills and confidence in areas where you were lacking.

2.
Small amount of material without the burden of learning
When trying to focus on practicing areas you are lacking in, the learning effect is best when the number of problems is sufficient and within a range that does not reduce the interest in learning, rather than unconditionally having a large number of problems.

"Mathematics by Area of ​​Study: Shapes and Measurement" breaks down the content to be covered, and the amount of learning for each content is generously arranged at 80 pages per volume and 3 to 8 problems per page, reducing the learning burden and increasing the learning effect, so children can learn in a fun and stress-free manner.