This research was aimed to: Produce nahwu teaching book based on Syauqi
Dhayf‟ theory. Measure the eligibility of the book. Measure the affectivity of
the book.This research was research and development model as laid out by
Borg and Gall was modified. The analyses qualitative databy using Miles and
Huberman‟s theory, and analyses quantitative data by using T-Test. the result
of this research is: Among the characteristics of teaching materials developed
are by utilizing inductive approach. Such approach uses materials which are
based on reformation theory by Syauqi Dhayf who neglects i’râb taqdiry and
mahally, removes ‘âmil in i’râb, and redefines nahwu topic. The developed
teaching book is eligible to be used in teaching nahwu based on validation by
experts nahwu, arabic, and teaching design. which achieved very good score.
The developed teaching book is effective in improving the grades of students
based on T-Test that counted: 20,014 bigger than T table: 2,101 and its
significant grade: 0,000 smaller than alpha: 0,050. It means there is a great
difference of exam‟s results between before and after implementation.