Cut and Paste activity used to create a tree map (thinking map) to classify lenses used in daily life. Using large sheet of construction paper in small groups is a possible way to complete this task.
door peephole, camera viewfinder
glasses, telescopes, binoculars (see below)
Microscope, magnifying glass, telescopes, binoculars, human eye, contact lenses
NOTE: Answers may vary as some powerful telescopes and binoculars used both lenses. Also both convex and concave can be found in eyeglasses. Moreover this could generate a discussion, exploration, or research on differences in answers. Hope you find this useful.