The influence of the place-value structure of the Arabic number ...

Section 3: On the importance of place-value integration in
arithmetical development
Study 3: Language effects on children’s non-verbal number line estimations
Figure 1: Mean estimation error in percent .............................................................................. 99
Figure 2: Results of both logarithmic (dashed line) and two-linear (solid line) fitting ......... 100
Figure 3: Distribution of individually computed breakpoints ................................................ 101
Figure 4: Regression lines based on the mean estimates of all children per data point ......... 102
Figure 5: Mean estimation error in percent for Italian- and German-speaking children ....... 105
Study 4: Early place-value understanding as a precursor for later arithmetic
performance – a longitudinal study on numerical development
Figure 1: Distribution of error types as categorized by Zuber et al. (2009) ........................... 145
Figure 2: A hypothetical curvilinear model of the relationship between the distance effect and
arithmetic performance .............................................................................................. 163
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