Skill in arithmetic requires knowledge of terms and facts, reasoning ability, and computational skills. All of these aspects are included in the 17 biweekly tests and 16 biweekly quizzes over new and previously taught concepts. The 136 speed drills (four per week) will also encourage your child to build his speed with his combinations and other memory work. The tests correlate with the Arithmetic 4 Work-text, and the Home School Arithmetic 4 Curriculum/Lesson Plans.