This study examined how literal symbols affect students' understanding of algebraic expressions. Middle school students (N = 322) were randomly assigned to 1 of 3 conditions in which they were asked to interpret an expression (e.g., 4c + 3b) in a story problem. Each literal symbol represented the price of an item. In the c-and-b condition, the…

There is increased interest by parents in communicating with their children about political violence. However, limited attention in the scholarly literature has focused on parent-child communication about war and terrorism. In response, the purpose of this study is to assess, within their respective ecological contexts, American and Northern Irish…