Turn a Cardboard Box into an Epic Marble Run - Great engineering challenge for kids. Fun group activity to see what each group comes up with!

Turn a Cardboard Box into an Epic Marble Run

Turn a Cardboard Box into an Epic Marble Run - Great engineering challenge for kids. Fun group activity to see what each group comes up with!

EL MUNDO DEL RECICLAJE: DIY Recicla una botella de plástico para jugar

EL MUNDO DEL RECICLAJE: DIY Recicla una botella de plástico para jugar

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