1.
Addition and subtraction of fractions
2.
triangle
3.
Addition and subtraction of decimals
4.
quadrangle
5.
broken line graph
6.
polygon

Light Sen, lighter than strong

1.
A, B stage type intensive learning
2.
Conceptual learning that allows you to understand the concept at a glance through visualization.
3.
Detailed explanations that are easy to understand even on your own

"Lightsen," a problem-solving book that makes math easier

"Lightsen" is a basic textbook that reduces the burden of learning by adjusting the amount and difficulty so that even students who struggle with math can study the types of problems without any burden.
The A and B stages are intensive learning systems that exclude advanced types. Stage A focuses on basic problems to ensure sufficient understanding and confirmation of concepts. Stage B focuses on essential types and systematically subdivides the types according to concepts and solution methods required for problem solving, enabling three-dimensional learning by difficulty level and type.
With Lightsen, you can solidify your skills and build confidence in math.