Melodious wooden building blocks for the Haba marble runs. Children love to experiment with sounds and tunes and will love this addition to their marble run system. When arranged in the correct order, the melodious building blocks form a pentatonic scale.
Contents: 1 track (32 x 4cm), 9 building blocks, 6 melodious blocks, 6 marbles.
Warning: contains glass marbles, not suitable for under 3 years.
older children and adults 6+, preschool 3 to 6