Once kids have mastered the numbers 0 to 5, they can try this workbook, which is focused on "Numbers to 9." Worksheets cover several foundational concepts to help young students grasp the basics of early number sense for numbers 0 to 9. This includes numeral and quantity recognition, such as connecting the numeral '5' with a group of five objects. Teachers should also introduce counting skills, showing students how to count forwards and backward within this range. Incorporating activities that involve sorting, ordering, and comparing quantities will help students understand concepts of more than, less than, and equal to.