Puzzle Brain Trainer Jigsaw Puzzle Ondoku, edited by Soseki Natsume [NJ-001]

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

Product Description ■ A scientifically proven jigsaw puzzle that trains brain power is now available!
It is supervised by Professor Kawashima of Tohoku University also the author of "Adult's Calculation and Reading Aloud Drill".
Product Details ■
Set Contents : Training Jigsaw Puzzle / 15 pieces x 8 pieces, Training Book (Manual), Progress Chart
Size when completed : Approx. 10.5 cm x 15 cm