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National Geographic news
1 个月
Digestive System
The digestive system is the series of tubelike organs that convert our meals into body fuel. There are about 30 feet (9 meters) of these convoluted pipeworks, starting with the mouth and ending ...
teachwire.net
15 天
Digestive system KS2 – Hands-on, whole-class experiment
Instructions for a hands-on KS2 classroom activity that uses bananas and biscuits to teach students about the human digestive ...
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