id	domain	url
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss200
ger-412	link.springer.com	http://link.springer.com/chapter/10.1
ger-412	nepc.colorado.edu	http://nepc.colorado.edu/publication
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss201
ger-412	link.springer.com	http://link.springer.com/chapter/10.1007/978-94-007-6437-8_25
ger-412	link.springer.com	http://link.springer.com/chapter/10.1007/978-94-007-6437-8_25
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss201
ger-412	www.corestandards.org	http://www.corestandards.org
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss200
ger-412	www.nctm.org	http://www.nctm.org/publications/te
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss201
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss201
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss/20
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss201
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss201
ger-412	www.moe.gov.bw	www.moe.gov.bw
ger-412	www.moe.gov.sg	https://www.moe.gov.sg/docs/default
ger-412	search.proquest.com	https://search.proquest.com/docview
ger-412	timss.bc.edu	http://timss.bc.edu/timss2007/mathr
ger-412	www.moe.gov.sg	https://www.moe.gov.sg/docs/default-source/document/education/syllabuses/sciences/files/2007-mathematics-(primary)-syllabus.pdf
ger-412	www.moe.gov.sg	https://www.moe.gov.sg/docs/default-source/document/education/syllabuses/sciences/files/2007-mathematics-(primary)-syllabus.pdf
ger-412	www.moe.gov.sg	https://www.moe.gov.sg/docs/default-source/document/education/syllabuses/sciences/files/2007-mathematics-(primary)-syllabus.pdf
ger-412	www.moe.gov.sg	https://www.moe.gov.sg/docs/default-source/document/education/syllabuses/sciences/files/2007-mathematics-(primary)-syllabus.pdf
ger-412	www.moe.gov.sg	https://www.moe.gov.sg/docs/default-source/document/education/syllabuses/sciences/files/2007-mathematics-(primary)-syllabus.pdf
ger-412	timss.bc.edu	http://timss.bc.edu/timss2007/mathreport.html
ger-412	timss.bc.edu	http://timss.bc.edu/timss2007/mathreport.html
ger-412	timssandpirls.bc.edu	https://timssandpirls.bc.edu/timss20
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss201
ger-412	timss.bc.edu	http://timss.bc.edu/timss2007/techre
ger-412	timss.bc.edu	http://timss.bc.edu/timss2007/pdf
ger-412	doi.org	http://doi.org/10.3102/0013189x103
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss201
ger-412	doi.org	http://doi.org/10.1016/j.stueduc.200
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss2011/downloads/timss2011_enc-v2.pdf
ger-412	timssandpirls.bc.edu	http://timssandpirls.bc.edu/timss2011/downloads/timss2011_enc-v2.pdf