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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 think about how new and old mathematics topics were related.
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 Japan42.9%
2 France36.6%
3 Germany 36.0%
4 Canada35.4%
5 United Kingdom34.2%
6 United States34.1%
8 Italy31.3%

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 = -4.072237 X +8.041
Correlation coefficient (r)-0.501
Coefficient of determination (R2)0.251

GDP per capita (current US$)
No. of data7
Regression equation
Y = -154358.662558 X +105972.493
Correlation coefficient (r)-0.358
Coefficient of determination (R2)0.128

Life expectancy at birth - Both sexes (years)
No. of data7
Regression equation
Y = 23.316130 X +73.170
Correlation coefficient (r)0.397
Coefficient of determination (R2)0.158

Fertility rate, total (births per woman)
No. of data7
Regression equation
Y = -0.838965 X +1.775
Correlation coefficient (r)-0.142
Coefficient of determination (R2)0.020

Suicide, age-standardized (per 100 000 population)
No. of data7
Regression equation
Y = 49.290064 X -8.179
Correlation coefficient (r)0.523
Coefficient of determination (R2)0.274