As a byproduct of participation, children gain a rich understanding of their own and others' mental lives'powerful tools in predicting and explaining human behavior and, therefore, in getting along with others.
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(ROOT (S (PP (IN As) (NP (NP (DT a) (NN byproduct)) (PP (IN of) (NP (NN participation))))) (, ,) (S (NP (NNS children)) (VP (VBP gain) (NP (NP (DT a) (JJ rich) (NN understanding)) (PP (IN of) (NP (PRP$ their) (JJ own)))))) (CC and) (S (NP (NP (NNS others) (POS ')) (JJ mental)) (VP (VBZ lives) (`` `) (ADJP (JJ powerful) (RB tools) (PP (PP (IN in) (S (VP (VBG predicting) (CC and) (VBG explaining) (NP (JJ human) (NN behavior))))) (CC and) (, ,) (ADVP (RB therefore)) (, ,) (PP (IN in) (S (VP (VBG getting) (PRT (RP along)) (PP (IN with) (NP (NNS others)))))))))) (. .)))
In order for children to get the most out of participation, they need to participate on a regular basis, at least once a day. 
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(ROOT (S (PP (IN In) (NP (NP (NN order)) (PP (IN for) (NP (NNS children) (S (VP (TO to) (VP (VB get) (NP (DT the) (JJS most)) (PRT (RP out)) (PP (IN of) (NP (NN participation)))))))))) (, ,) (NP (PRP they)) (VP (VBP need) (S (VP (TO to) (VP (VB participate) (PP (IN on) (NP (NP (DT a) (JJ regular) (NN basis)) (, ,) (ADVP (IN at) (JJS least)))) (NP (RB once) (DT a) (NN day)))))) (. .)))