A computer-implemented user interface displayed on a display of a computer directed assembly workstation is provided for interacting with a sequence of assembly instructions. In some embodiments, an in-use view area is displayed on the user interface providing a “live” image of an item the assembler is currently working on. This in-use view area generally involves taking videos of tools, materials, matrix trays with materials, and/or components of the final product as they are manipulated by the assembler. The user interface further displays a preassembled view area providing an image of at least one preassembled item provided as an example of a properly assembled item. This example helps the assembler process each assembly instruction with greater accuracy and speed. This preassembled view area may include other products previously assembled and useful to the assembler performing the assembly task including images and videos of materials, components, and/or matrix trays with materials.