Science lessons in most Welsh schools are good but assessment isn't robust enough, according to school inspectors.
Estyn also says sometimes, in primary schools, teachers pass on their science misunderstandings to pupils.
The Welsh Government welcomes the report which it says is broadly positive.
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Cardiff's Neonatal Intensive Care Unit has been closed since Thursday due to poor 'infection control measures', a health council has said.
Welcome to the Newsweek Quiz - where we'll be testing your knowledge from the last seven days of news in Wales.
The widow of Welsh rugby player Danny Jones will sing the traditional Challenge Cup hymn 'Abide With Me' at Wembley Stadium tomorrow.