You can learn the lettering font of hard pen.
(such as Chinese lettering fonts).
A distinction must be made between:
Writing is * * * sex, which is to let most people know.
Calligraphy is the art of showing individuality. It only needs people in the circle (with high cultural level or) to know.
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For your topic:
First, the calligraphy of brush strokes is of great benefit to cultivate children's temperament, cultivate sentiment and exercise endurance.
Second, improve children's cultural literacy.
Third, improve children's analytical ability and resolution.
Fourthly, I suggest that you can let your children learn China's calligraphy.