The "Oefen je slim" series is a unique educational series that stimulates children's curiosity. The workbooks help them to master school material in a playful way: no boring assignments, but fun exercises with cheerful illustrations. In the second year of kindergarten/group 1, your child is extremely curious: they want to know everything and gradually develop an interest in letters and numbers. This is the ideal time to encourage them. This workbook provides a first introduction to playing and practicing with letters and numbers. For each exercise in this book, the specific goal is explained. This way, as a parent, you know exactly what your child is practicing. In this book, your child learns to recognize numbers, observe well, draw lines, think logically, recognize letters, and much more! In short, hours of play and practice fun for children aged 4 and 5!