In this lesson, 5th graders learn about value and draw a 7-tone value scale. They then observe and draw an area of a skeleton model on a 6x6-inch square, incorporating line, shape, and value. They color the negative space and add collage...

Hermann Ludwig Ferdinand von Helmholtz (August 31, 1821 - September 8, 1894) was a German physician and physicist who made significant contributions to several widely varied areas of modern science. In physiology and physiological...