Up to elementary school, it is the realm of intuition and feeling, and from middle school, it is the realm of abstraction and logic.
Children experience such a big change in learning in a short period of time, from 6th grade to 7th grade, and from middle school onwards, many students drop out as many concepts and difficult terms appear.
This is why it is common to hear things like, 'Even if you were good at math until elementary school, things may be different starting in middle school.'
『Elementary Upper Grade Math Algebra 2 Concepts Leading Up to the College Scholastic Ability Test』 is a specialized textbook for children who are beginning their first year of middle school. It not only allows them to smoothly accept the transition from elementary to middle school, but also fosters the ability to connect and relate concepts by penetrating the essence of mathematics that is connected as a single context.