Interlocking construction block

A construction block comprising:

• two side panels of rectangular shape and of equal dimensions, facing each other and parallel to each other;
• an outer partition located at 90° of said two side panels, said outer partition having a length equal to the height of the side panels, said outer partition having a width smaller than the distance between the side panels, ends each of the longitudinal ends of said outer partition being attached to each of the longitudinal ends of said side panels by means of a first tab and a second tab, each of said first and second tabs being perpendicular to the outer partition, each of said first and second tabs attached to an inside surface of the edge that constitutes the height of the outer partition, said outer partition being attached to the side panels so that one of the edges of said outer partition extends beyond one of the edges of the side panel, said outer partition having at least one through hole;
• a third tab and a fourth tab projecting from the edge of the outer partition and beyond the edge of the side panels, perpendicular to said outer partition and without reaching the edge of each side panel that is farther from the outer partition, each of said third and fourth tabs respectively attached to an inner edge of one of the side panels;
• one or more inner partitions attached to the inside surfaces of the two side panels and of the third and fourth tabs, each of said inner partitions extending parallel to the outer partition, from the same end as the outer partition and having the same length as said outer partition, each of the inner partitions having at least one through hole, the inner partition that is farthest from the outer partition being attached to the end of the second and third tabs that is farther from the outer partition.