★This is a set of training manuals specially developed for children by Professor Ryuta Kawashima, Japan’s leading “brain imaging” researcher and renowned neuroscience expert, to enhance their intelligence, memory, and logical thinking skills!
★Each training manual is designed for a 2-week program, requiring only 5 minutes of study per day! The scientific training method promotes the simultaneous development of both the left and right brains!
★Designed step-by-step according to children’s intellectual growth needs! Each manual corresponds to developing a specific set of skills for a particular age group.
★Each book comes with fun stickers to help children successfully complete the intelligence games and tasks!

This series includes 6 titles:
Tensai! Workbook 2+
Tensai! Workbook 3+
Tensai! Workbook 5+
Tensai! Workbook 7+
Tensai! Workbook 9+
Tensai! Workbook 11+

Tensai represents a 21st-century Japanese approach to child development, originating from the Ryuta Kawashima Laboratory. It is a unique method for cultivating children's intelligence through brain training, aimed at boosting IQ, memory, unlocking brain potential, and preventing dementia. Recent research indicates that the period from age 2 to 12 is a phase of rapid brain development and peak activity, and training during this window can yield remarkable results.

This book is tailored for 3-4-year-olds to complete the training course.

Ryuta Kawashima

A renowned Japanese neuroscience expert and medical doctor, Ryuta Kawashima is a pioneer in Japan’s “brain imaging” research, which studies the functions of different brain areas. After obtaining his doctorate, Kawashima moved to Sweden, serving as a guest researcher at the Karolinska Institute. He later returned to Japan and is currently a professor at Tohoku University. He has also served as a member of a Japanese government council, involved in language and cultural departments.
Kawashima’s research primarily focuses on two areas: first, linking different brain regions to capabilities such as emotion, language, memory, and cognition; second, applying this knowledge to aid child development, help the elderly maintain memory, and assist patients in recovering learning abilities. His book “Train Your Brain: 60 Days to a Better Brain” achieved tremendous success, selling over 1 million copies in Japan alone and more than 2.5 million copies worldwide! He was also responsible for supervising the development of the highly popular casual puzzle game “Brain Age: Concentration Training,” supervised by Professor Ryuta Kawashima, produced by Nintendo.