Interactive graphics are an effective way of communication and information delivery, especially for complex domains. However, domain experts are rarely aware of the potentials of interactive visual displays and which interaction principles can be in charge for communication and teaching purposes. In this paper we extend a pattern language for interactive information graphics and present four patterns. These patterns are all variations of buttons that can switch between two visual states. Each

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... ttern describes the consequences and special fields of application related to the chosen button type in an educational setting.