PURPOSE: To enable hearing a sound to musical scales and a melody, and double a fun, in addition to enjoying a speed feeling, and make a contribution to a music class, auditory education and cultivation of artistic sentiments by partly using monotony generating rollers having a built-in monotony generating device and internally generating a tone due to rotation.

CONSTITUTION: In a roller slide 1 having many rollers 2, 2a and so forth on a slide way 4, some of the rollers 2, 2a and so forth are made as monotony generating rollers 3, 3a and so forth having a built-in monotony generating device and internally giving a tone due to rotation. When a child slides on the slide way 4 of the roller slide 1, therefore, the rollers 2, 2a and so forth, and the monotony generating rollers 3, 3a and so forth rotate. Consequently, the roller bodies 16 of the monotony generating rollers 3, 3a and so forth rotate, and a hammering sound is generated within the monotony generating rollers 3, 3a and so forth. In this case, as the aforesaid rollers 3, 3a and so forth are pertinently arranged, a sound to the scales of do, re, mi and so forth, and a melody of do, do, re and so forth are continuously gener ated. According to the aforesaid construction, a fun is doubled because of hearing a melody, together with the sliding speed feeling.