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Key Stage 1 (Lower Primary)
>
1.2 Measures 度量
>
Time 時間
>
3M2.3 Find the Elapsed Time using 'Hours, Minutes & Seconds'
中文版:
https://sites.google.com/site/hkgeogebra/ks1/m/time/elapsed_c
Also available on GeoGebraTube:
http://www.geogebratube.org/material/show/id/156369
(
Download GeoGebra File
)
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