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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 Germany22.5%
4 United States17.1%
5 Sweden15.6%
6 Canada15.1%
7 Australia12.9%
8 United Kingdom11.3%
9 Republic of Korea7.8%
10 Japan 5.0%

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 data10
Regression equation
Y = 1.962645 X +6.451
Correlation coefficient (r)0.304
Coefficient of determination (R2)0.092

GDP per capita (current US$)
No. of data10
Regression equation
Y = 732.484771 X +49616.029
Correlation coefficient (r)0.005
Coefficient of determination (R2)0.000

Life expectancy at birth - Both sexes (years)
No. of data10
Regression equation
Y = -9.158457 X +83.356
Correlation coefficient (r)-0.345
Coefficient of determination (R2)0.119

Fertility rate, total (births per woman)
No. of data10
Regression equation
Y = 1.242921 X +1.263
Correlation coefficient (r)0.333
Coefficient of determination (R2)0.111

Suicide - all ages (per 100,000 population)
No. of data10
Regression equation
Y = -41.372870 X +20.594
Correlation coefficient (r)-0.514
Coefficient of determination (R2)0.264