Activities with compass and spectacles
Straight lines indicate sighting lines from the viewer. Blackboard drawings by students. Straight lines indicate sighting lines from the viewer, through a picture frame \[a vertical rectangle for the diagrams to the left; a horizontal line for the long vertically oriented diagram to the right\]. Sighting lines through a picture frame to the lute. A glass ball as viewed in a curved mirror; student exploration. An alignment of spectacles forms part of one students exploration in comparing the effect of looking through each. A student examines reflections of a block and small mirror resting upright on top of a round mirror \[horizontal on the table\]. A contemporary painting involving perspective, in an art exhibit by Eric Sealine, Boston Sculptors Guild. Student-initiated explorations with lenses, mirrors, eyeglasses and a glass ball. Comparing two lenses by looking at print on a chart. Trying out the eyeglasses. An alphabet block on and surrounded by mirrors. Intriguing explorations with light. Examining the glass ball. Viewing through a pinhole. Viewing a mirror propped upright. The mirror is at the right, upright on the floor; students view it while standing or sitting on the floor. A student drawing the picture frame by which she viewed a lute.