This series addresses the Muslim children as well as newcomers to Islam, in the West.
In ten books, it covers the six pillars of Eemaan and related subjects.
Each book is structured into chapters and sections to enhance learning and help present the concepts in a way adequate for children at the elementary-school level.
Each chapter includes exercises to emphasize the concepts, making it easy to use these books as reading and study material in schools.

Or buy individually:

Eemaan Made Easy: Part 1 - Knowing Allaah الإيمان ميسراً - العلم بالله
Eemaan Made Easy: Part 2 - Knowing the Angels الإيمان ميسراً - معرفة الملائكة
Eemaan Made Easy Part 3 - Knowing Allaah's Books & the Qur'aan الإيمان ميسراً معرفة كتب الله والقرآن
Eemaan Made Easy: Part 4 - Knowing Allaah's Prophets and Messengers الإيمان ميسراً - معرفة أنبياء الله ورسله
Eemaan Made Easy: Part 5 - Knowing the Last Day الإيمان ميسراً - معرفة اليوم الآخر
Eemaan Made Easy: Part 6 - Believing in Allah's Decree, Qadar الأيمان ميسراً - الإيمان بالقضاء والقدر