RISU USA

With the worksheets and our proven method, your child can build addition proficiency efficiently and effectively.

The method was originally developed in Japan. About a quarter of elementary schools in Japan have used similar worksheets almost every day.

The key worksheets have the clear target time. Please read the instruction and follow the steps to get the maximum benefits.

This set also contains 12 optional worksheets for further improvement.

These worksheets are focusing on improving the proficiency of addition but not teaching the concepts.

Good Arithmetic proficiency is crucial succeeding in STEM subjects and a tremendous impact on your child's life. 

This is the set of subtraction worksheets that help your child achieve sufficient proficiency effectively and efficiently. The method was developed in Japan and about a quater of Japanese elementary schools use these worksheet almost every day.

Regrouping in subtraction is the most difficult concept learn in elementary school, and the majority of students do not have sufficient proficiency. Your child can build a great advantage by improving subtraction proficiency that has direct impact to division proficiency too.

Please follow the guideline in this set.

Building multiplication proficiency is crucial for success in STEM subjects.

If your child is not good at division, usually lack of multiplication proficiency is the reason.

Multiplication proficiency also directly affects fraction proficiency.

This package contains matrix-based key worksheets and bonus worksheets.  Matrix-based worksheets are designed to improve proficiency efficiently and effectively. Once your child reaches great proficiency with the matrix-based worksheets, your child can use the skill to further learn multi-digit multiplication with bonus worksheets. 

Please read the document in the package and follow the instruction to ensure effective learning and to motivate your child.