![]() Ask if students can determine what is written. The elements of symmetry present in a particular crystalline solid. Remind students that they have to write from right to left (rather than left to right as we usually write). Other articles where reflection is discussed: symmetry: reflection, and inversion. It is easy to see, because one half is the reflection of. Here my dog 'Flame' has her face made perfectly symmetrical with a bit of photo magic. The simplest symmetry is Reflection Symmetry (sometimes called Line Symmetry or Mirror Symmetry). Ask students to practice mirror writing their name and have them check their writing with a mirror. Reflection Symmetry (sometimes called Line Symmetry or Mirror Symmetry) is easy to see, because one half is the reflection of the other half. Use a mirror to determine what is written. Then explain mirror writing to the class. Ask students to stand for symmetrical shapes and sit for asymmetrical shapes. Then show students more shapes and ask students to determine which shapes are symmetrical. Show that doing so does not make the shape symmetrical, but shows different results. Remind students that you could place the mirror on the line in two ways, to reflect the left or right side of the heart. ![]() The whole heart is symmetrical, but when students try placing the mirror on the dotted line of the broken heart, they should see that it is asymmetrical- or does not have symmetry. Ask students to place the mirror on the dotted line and to determine if the shape has symmetry or not. ![]() Hand out a worksheet with a heart and a broken heart as well as a mirror. In fact, people are especially good at detecting mirror symmetry when the mirror line is oriented vertically (up-down). Scientists have shown that our brain is rather good at recognizing this type of symmetry. If you don't have a mirror you could also fold it in half to determine if a shape has symmetry. Mirror or reflection symmetry is the most common type of symmetry found in nature, occurring in almost all animals and many plants. Explain to students that a shape has symmetry if the image remains the same if you place a mirror in the middle of the object.
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