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Question: This school year, how often did your teacher do the following things in your mathematics lessons? - The teacher asked us to explain how we solved a mathematics problem.
Choices: "Never or almost never" "Less than half of the lessons" "About half of the lessons" "More than half of the lessons" "Every lesson or almost every lesson"
Data: % of "More than half of the lessons" "Every lesson or almost every lesson"
Period:
Area:
10 countries/ areas
Highlight:
1 United Kingdom55.3%
2 Germany 55.2%
4 United States54.3%
6 France53.7%
7 Canada52.1%
8 Italy50.4%
9 Japan43.9%

Note
The data of Azerbaijan are collected only in Baku. The data of Ukraine are collected from 18 out of 27 regions.

Source
OECD PISA 2022

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data7
Regression equation
Y = 6.198307 X +3.353
Correlation coefficient (r)0.858
Coefficient of determination (R2)0.736

GDP per capita (current US$)
No. of data7
Regression equation
Y = 227218.376808 X -67711.551
Correlation coefficient (r)0.592
Coefficient of determination (R2)0.350

Life expectancy at birth - Both sexes (years)
No. of data7
Regression equation
Y = -32.188023 X +98.293
Correlation coefficient (r)-0.616
Coefficient of determination (R2)0.379

Fertility rate, total (births per woman)
No. of data7
Regression equation
Y = 3.443561 X -0.321
Correlation coefficient (r)0.655
Coefficient of determination (R2)0.429

Suicide, age-standardized (per 100 000 population)
No. of data7
Regression equation
Y = -14.999853 X +17.279
Correlation coefficient (r)-0.179
Coefficient of determination (R2)0.032