Abstract: An electrical toy block apparatus, system, and a method for making the same are provided. The electrical toy block has a housing block with a power supply housed within and an external terminal assembly for forming an electrical circuit within the electrical toy block. The electrical toy block is constructed by forming a pocket within the housing block, inserting the power supply within the pocket, securing the external terminal assembly to the housing, and connecting the external terminal assembly to the power supply in an electrically conductive relationship. The external terminal assembly of the electrical block is magnetic so that additional toy blocks can be attached to the housing block to form electrical circuits made up of various arrangements of toy blocks. An external device may then be connected to the circuit to power the external device.