Converting units in your head
This book teaches children (and adults) to convert various units in of length, area, volume, weight, temperature, and speed in their heads. Growing up learning only one system of measurement makes it hard to translate between the traditional system to the metric system and back using exact conversion units.
The world has gone to Metric system and we Americans must be able to do these conversion quickly as needed.
This book can be used by adults as well, to help rejuvenate mental skills. It is believed that simple mental math exercises such as these can keep the brain agile and healthy. The mental math series offers a perfect activity for a caretaker engage in with an elderly.
