This math chapter workbook on "Symmetry," begins with the definition of symmetry, explaining that it is a property where one half of a shape is a mirror image of the other half. This could be demonstrated through hands-on activities such as folding paper shapes to identify lines of symmetry. Examples from everyday life, such as butterflies, stars, and hearts, could be used to help students relate the concept to the real world. The idea can be reinforced through interactive activities, such as using mirrors to explore symmetry in different objects.

One problem could involve identifying lines of symmetry in different shapes, such as distinguishing how many lines of symmetry a square or an equilateral triangle has. To solve these, students should visually or physically fold the shapes to observe mirrored halves, noting that squares have four lines of symmetry while equilateral triangles have three. Another exercise might involve drawing the missing half of a picture to create a symmetrical image.