Convertible step stool for children

FIG. 1 is a perspective view of convertible step stool for children showing my new design;

FIG. 2 is a view when the convertible step stool for children is in a disassembled state;

FIG. 3 is a front view of the step tool of FIG. 1 ;

FIG. 4 is a back view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines shown on the drawings depict portions of the convertible step stool for children that form no part of the claimed design.