To describe how to find a line of symmetry. To recognize that not all shapes have lines of symmetry. To identify at least one line of symmetry in shapes. Ask students what they know about symmetry. Tell students that if they fold a figure on a line of symmetry, the 2 halves will match.
Some figures have many lines of symmetry.
Show students examples of lines of symmetry and non-examples of lines of symmetry using visuals. For purposes of cultural diversity, mention Native American, Turkish, and Moroccan rug designs. Take the second piece of paper and fold it in half two times and cut out a shape like the top of a heart, making sure to not cut on the folded lines. Trace the lines of symmetry and tell students again that the fold lines on the paper are lines of symmetry. Have students make their own symmetric designs.