The ornamental design for an educationaltoy, as shown and described.
FIG. 1 is a top, left and front perspective view of an educational toy showing my new design;
FIG. 2 is a bottom, right and rear perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines in the drawings depict portions of the educational toy that form no part of the claimed design. The appearance within the unshaded and recessed or interior regions not visible in profile forms no part of the claimed design.