Source: https://www.nytimes.com/2018/01/03/learning/lesson-plans/analyzing-the-elements-of-art-four-ways-to-think-about-value.html?_r=0&module=Slide®ion=SlideShowTopBar&version=SlideCard-8&action=Click&contentCollection=Art%20%26%20Design&slideshowTitle=The%20Art%20of%20Julian%20Stanczak¤tSlide=8&entrySlide=1&pgtype=imageslideshow