The metaphor of a scaffold has been used to describe eective adult support as children work on tasks that teach culturally valued concepts and skills.
( ( ( The metaphor ) ( of ( a scaffold ) ) ) ( ( has ( been ( used ( to ( ( describe ( eective ( adult support ) ) ) ( as ( children ( work ( on ( tasks ( that ( teach ( ( ( ( culturally valued ) concepts ) and ) skills ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN metaphor)) (PP (IN of) (NP (DT a) (NN scaffold)))) (VP (VBZ has) (VP (VBN been) (VP (VBN used) (S (VP (TO to) (VP (VB describe) (NP (JJ eective) (NN adult) (NN support)) (SBAR (IN as) (S (NP (NNS children)) (VP (VBP work) (PP (IN on) (NP (NP (NNS tasks)) (SBAR (WHNP (WDT that)) (S (VP (VBP teach) (NP (NP (ADJP (RB culturally) (VBN valued)) (NNS concepts)) (CC and) (NP (NNS skills))))))))))))))))) (. .)))
The metaphor of a scaffold is only ever used to describe physical scaffolding and building plans.
( ( ( The metaphor ) ( of ( a scaffold ) ) ) ( ( ( is only ) ( ever ( used ( to ( describe ( physical ( scaffolding ( and ( building plans ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN metaphor)) (PP (IN of) (NP (DT a) (NN scaffold)))) (VP (VBZ is) (ADVP (RB only)) (VP (ADVP (RB ever)) (VBN used) (S (VP (TO to) (VP (VB describe) (NP (JJ physical) (NN scaffolding) (CC and) (NN building) (NNS plans))))))) (. .)))