Get this 80-page activity book in PDF format for children aged about 5 to 7 years old. At this level, students are starting to understand that numbers can be thought of as “wholes” and be divided (or “cut into”) several parts. They are learning their doubles and halves to 20 and are beginning to recognize the common unit fractions ½, ⅓, ¼ and ⅕. At this level, students will need reminding that fractions are equal parts of a whole.