Standard New 4th Grade Mathematics Original Ballpoint Exercises, [Includes Pen]

Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. With confirmation test By aggregating information from all textbooks and carefully selecting content from the perspective of teachers, we have created a balanced curriculum, unit structure, and learning flow for "knowledge and skills" and "thinking, judgment, and expression skills." This promotes a solid understanding and acquisition of "knowledge and skills," and on that foundation, it is possible to build "thinking, judgment, and expression skills."