Zachariya Trichas 
Professor Zach’s K-5 Math Curriculum [EPUB ebook] 

In this book, Zach teaches a plethora of mathematical topics, including addition, subtraction, multiplication, division, fractions, decimals, percentages, profit/loss questions, units of measurement, algebra, geometry, and graphing.

Sobre el autor

Zach Trichas is an award-winning writer and photographer, as well as an avid tennis player. Ever since he was a child, Zach has had a deep appreciation for the beauty of mathematics. He is sixteen years of age, and resides in New Jersey with his parents, brother, sister, and cat named Jordan.