Problem solving is one of the main competences we seek to teach students at school for use in their future lives. However, when dealing with mathematical problems, teachers encounter a wide variety of difficulties. To foster students' problem-solving skills, the authors developed "strategy keys." Strategy keys can serve as material to…

Second-grade children were given general training in monitoring the utility of strategies, the affective consequences of strategy use, or no strategy-monitoring training. They then performed an associative learning task, first without strategy instructions and then with instructions to use either an effective or ineffective strategy. All training…