( ( Each group ) ( ( ( ( lasts ( ( approximately six ) weeks ) ) and ) ( ( meets ( ( one time ) ( per ( week ( for ( 30 minutes ) ) ) ) ) ) ( during ( the ( school day ) ) ) ) ) . ) )
(ROOT (S (NP (DT Each) (NN group)) (VP (VP (VBZ lasts) (NP (QP (RB approximately) (CD six)) (NNS weeks))) (CC and) (VP (VBZ meets) (NP (NP (CD one) (NN time)) (PP (IN per) (NP (NP (NN week)) (PP (IN for) (NP (CD 30) (NNS minutes)))))) (PP (IN during) (NP (DT the) (NN school) (NN day))))) (. .)))
Each group lasts approximately six weeks and meets one time per week for 30 minutes during the school day.
(ROOT (S (NP (DT The) (JJ fetal) (NN period)) (VP (VBZ lasts) (NP (NP (QP (RB approximately) (CD 30)) (NNS weeks)) (NP (NNS weeks)))) (. .)))