Information about the title: Clear structures. The pages are characterized by a clear, well-structured design, a manageable double-page layout, appropriate font size, and few exercise formats per page to accommodate the visual perception difficulties of many children. Information about the series: Active mathematics instruction that supports all children. Click! brings mathematics to life. Students discover mathematical structures in everyday situations and learn to generalize and apply them. Holistic approaches make the connections visible. Active-discovery learning: Concrete projects allow for plenty of independent work. Operative practice: Both structured and automatic tasks make students aware that practice is a central and integral part of mathematics instruction. Individually.