"What's so special about the square again? Ah, four equal sides. I merk` me! "Compact Wish posters belong to the essential equipment of every classroom. Important core content must automate children fast to learn successfully. They also feel more confident when they can always retrieve mathematical knowledge at a glance. Whether basic arithmetic, geometric shapes, length or weight units - these 12 clear and decorative posters give lightning fast answers to frequently asked questions - and can be used flexibly. And if the next time a child asks, "How is this divide-by-computing again" They say only: "Look on shopping-Poster!"