Over 2.5 million people worldwide have boosted their brain-power and memory with Train Your Brain. In this book, Dr. Ryuta Kawashima shares his scientifically-backed program for keeping your brain healthy and staving off mental agingwith only five minutes of simple math problems every day. Take a memory test once a week and log your results to see your progress.
Brand
Kumon
| Dimensions | 7.13 × 10.13 in |
|---|---|
| UPC | 9781933241159 |
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