Let your young child have fun with the joy of geometry This early developmental literacy and geometry book is a clever way to help provide a mathematical neural net for children 16 months to five years. Our characters, Line and Circle, do "tricks" such as intersecting and zig-zagging. Large print words written both vertically and horizontally on the page in English allow children to clearly see how the words and the sounds connect. Line and Circle are large enough for small fingers to trace and follow, adding to self-confidence and reading enjoyment. Future books in the series will build upon the ones before them.