blackboard, whiteboard, corkboard, crayon, eraser, whiteboards, bulletin board, scribbles, grease pencil, pencil, scrawl, overhead projector, chalk, thumbtack, easel, posterboard, notepad, pegboard, napkin, diagraming, clicker, magic marker, sharpie, worktable, quadratic equation, lunchroom, pentagrams, spray paint, highlighter, doorknob, classroom, masking tape, clipboard, fingerpaint, scotch tape, pictogram, doorpost, checkerboards, formica, doodling, countertop, flashcard, pushpin, jotter, handwriting, graffito, bookshelf, stencil, schoolbook, lettering, foolscap, squiggles, acrostics, crumby, davenport, wax crayon, quill pen, tables, erlenmeyer flask, sketchpad, stipple, typewriter, wall, mimeograph machine, prewriting, homeroom, binder, sheet, doorframe, entrail, inkblots, mnemonics, electric typewriter, carrel, sketch pad, lectern, protractor, linoleum, stenotype, ballpoint pen, printout, algebra, serviette, onionskin, semicircles, schoolroom, typeset, hieroglyphics, mercator projection, desks, soap dispenser, math, jungle gym, pythagorean theorem, antonyms, graph, wainscotting, cinder block, ballpoint, sawhorse, window pane, splotches, billboard, backpack, crane, bathtubs, binoculars, blackboards, chessboard, grate, marquee, switchboard, accordion, barn, bathtub, bucket, cage, console, darkroom, freehand, illustrative, diagrammatic, pictorial, display, interpolated, penciled, tachistoscopic, twodimensional, outlined, scrawled, scribbled, silhouette, sketchy, stereographic, strip, color, computergenerated

flat solid