Ask the students to hold the mirror in front of them at arms length and look at their nose. Ask the students to look at the geometric figure sheet. After they tell you, ask them to check their answers with the mirror. Day 2 Have the students attach the block to the mirror with the rubberband. Students pair up an make an angle with two mirrors and place a rubber stopper with a pencil stuck in it in front of the mirrors inside the angle.
Students arrange the mirrors so they see exactly three images.
Point out to the students that this should be a 90 degree angle. Have the students arrange the mirrors so they can see exactly four images, and check the angle, then five images, and check the angle, then six images, and check the angle, then eight images, and check the angle, then ten images, and check the angle. Day 1 Have the students list all the figures on the geometric figure sheet that have no lines of symmetry, all the figures that have exactly one line of symmetry, exactly two lines of symmetry, exactly three lines of symmetry, etc. All students should copy the chart that lists the angles of the mirrors and the number of images that are produced. Ask the students to memorize the chart and be able to reproduce it from memory the next day.