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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 France 23.7%
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 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 data10
Regression equation
Y = 1.021475 X +6.491
Correlation coefficient (r)0.183
Coefficient of determination (R2)0.033

GDP per capita (current US$)
No. of data10
Regression equation
Y = 8840.961175 X +47515.162
Correlation coefficient (r)0.046
Coefficient of determination (R2)0.002

Life expectancy at birth - Both sexes (years)
No. of data10
Regression equation
Y = -7.727114 X +83.237
Correlation coefficient (r)-0.249
Coefficient of determination (R2)0.062

Fertility rate, total (births per woman)
No. of data10
Regression equation
Y = 1.396231 X +1.255
Correlation coefficient (r)0.349
Coefficient of determination (R2)0.122

Suicide, age-standardized (per 100 000 population)
No. of data10
Regression equation
Y = -38.359558 X +17.241
Correlation coefficient (r)-0.619
Coefficient of determination (R2)0.383