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Question: How often do these things happen in your mathematics lessons? - It is too disorderly for students to work well.
Choices: "Every or almost every lesson" "About half the lessons" "Some lessons" "Never"
Data: % of "Every or almost every lesson"
Period:
Area:
10 countries/ areas
Highlight:
1 Italy29.1%
2 France23.7%
3 Germany 22.5%
4 United States17.1%
6 Canada15.1%
8 United Kingdom11.3%
10 Japan5.0%

Note
Belgium: The Flemish Community only. United Kingdom: England only.

Source
TIMSS 2019 > International Database > TIMSS 2019 Data Almanacs - Grade 4

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data7
Regression equation
Y = 0.634230 X +6.472
Correlation coefficient (r)0.178
Coefficient of determination (R2)0.032

GDP per capita (current US$)
No. of data7
Regression equation
Y = 9868.151532 X +48988.890
Correlation coefficient (r)0.052
Coefficient of determination (R2)0.003

Life expectancy at birth - Both sexes (years)
No. of data7
Regression equation
Y = -4.088819 X +82.237
Correlation coefficient (r)-0.158
Coefficient of determination (R2)0.025

Fertility rate, total (births per woman)
No. of data7
Regression equation
Y = 0.381915 X +1.407
Correlation coefficient (r)0.147
Coefficient of determination (R2)0.022

Suicide, age-standardized (per 100 000 population)
No. of data7
Regression equation
Y = -21.880742 X +13.330
Correlation coefficient (r)-0.528
Coefficient of determination (R2)0.279