(n.) = blackboard ; chalkboard ; slate ; slateboard ; shale. Ex: Imagine that there is a graphic to project on the screen or blackboard. Ex: In some cases, the overhead projector can replace the chalkboard. Ex: Libraries are built mainly from wood, slate and glass, with a structure designed to suit a wide range of activities. Ex: Now, instructors can beam what they write on their whiteboards directly to students' laptops, in effect turning each laptop screen into a portable, interactive slateboard. Ex: Since shales and siltstones erode faster than sandstones and limestones, the basic topography is flat-topped mountains with stepped flanks. ---- * de color pizarra = slaty . * parecido a la pizarra = slaty . * pizarra virtual = whiteboard.