( ( Younger children ) ( ( ( ( ( ( learn ( about ( ( different forms ) ( of energy ) ) ) ) , ) ( including ( heat ( , ( ( light and ) sound ) ) ) ) ) , ) ( though ( concrete activities ) ) ) . ) )
(ROOT (S (NP (NNP Younger) (NNS children)) (VP (VBP learn) (PP (IN about) (NP (NP (JJ different) (NNS forms)) (PP (IN of) (NP (NN energy))))) (, ,) (PP (VBG including) (NP (NN heat) (, ,) (NN light) (CC and) (NN sound))) (, ,) (SBAR (IN though) (FRAG (NP (JJ concrete) (NNS activities))))) (. .)))
Younger children learn about different forms of energy, including heat, light and sound, though concrete activities.
(ROOT (S (NP (NP (NNP Heat)) (, ,) (NP (NN light)) (, ,) (CC and) (NP (NN sound))) (VP (VBP are) (NP (NP (DT all) (JJ different) (NNS forms)) (PP (IN of) (NP (NN energy))))) (. .)))