Complex sentence: Tom recently wrote a book on using origami to teach math. He has co-authored two non-math origami books: "Origami, Plain and Simple" and "Russian Origami", and he is on the Board of Directors of OrigamiUSA (a national non-profit arts organization).
Split into simpler sentences: Tom recently wrote a book on using origami to teach math. He has also co-authored two non-math origami books: "Origami, Plain and Simple" and "Russian Origami". He is also on the Board of Directors of OrigamiUSA (a national non-profit arts organization).