Stock photography, photos: pen between book Stock photos of pen wedged between a red book concept knowledge, education,homework Photograph: © Choon Boon Ng Click for a larger image and more information Keywords associated with this stock photo: pen,wedged,between,red,thick,book,homework,home work,assignment,answer,question,solution,tutorial,learn,learning,literacy,literate,literature,notes,textbook,text,facts,puzzling,tough,hard,difficult,school,college,university,classroom,science,study,studies,studying,studious,scholar,subject,writing,written,teaching,education,exams,examination,schoolwork,intellectual,knowledge,analyse,analysis,analyze,concept,conceptual,bookmark