Diktate über die Zeit (1907 und 1915)

Ohne Zusammenfassung     

Place‐value understanding in number line estimation predicts future arithmetic performance

In multi‐digit numbers, the value of each digit is determined by its position within the digit string. Children's understanding of this place‐value structure constitutes a building block for later arithmetic skills. We investigated whether a number line estimation task can provide an assessment of place‐value understanding in first grade. We hypothesized that estimating the position of two‐digit numbers requires place‐value understanding. Therefore, we fitted a linear function to children's estimates of two‐digit numbers and considered the resulting slope as a measure of children's place‐value understanding. We observed a significant correlation between this slope and children's performance in a transcoding task known to require place‐value understanding. Additionally, the slope for two‐digit numbers assessed at the beginning of grade 1 predicted children's arithmetic performance at the end of grade 1. These results indicate that the number line estimation task may indeed constitute a valid measure for first‐graders' place‐value understanding. Moreover, these findings are hard to reconcile with the view that number line estimation directly assesses a spatial representation of numbers. Instead, our results suggest that numerical processes involved in performing the task (such as place‐value understanding) may drive the association between number line estimation and arithmetic performance.     

From STEM to STEAM: How to Monitor Creativity

Creativity is a broad and complex construct, difficult to define and to quantify, assumed to introduce new impulses into science education (STEM), and leading to better acceptance of science by adolescents. Therefore, increasing efforts are being undertaken to integrate traditional creativity (Arts), in modifying STEM to STEAM. Consequently, a valid way of empirically quantifying of creativity of adolescents is needed. In this study, part of a European initiative (CREATIONS), an 8-item Likert-scale questionnaire quantifying individual creativity was administered to a sample of 2,713 students, aged 11–19 (M ± SD = 15.71 ± 2.24; 54.7% females), revealing two subscales: one, labelled Act, covering conscious and trainable cognitive processes; the second, named Flow, contained items describing elements of flow experiences, a mental state of creativity. Analyses indicated that there were no gender differences and that younger students’ creativity scores were higher than those of older students. Recommendations for implementation in STEAM lessons are discussed.