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- 1. Line Symmetry
- 2. Line Symmetry <ul><li>If a shape can be folded in half so that one half fits exactly on top of the other, then we say that the shape has got line symmetry . </li></ul><ul><li>The fold is called a line of symmetry. </li></ul><ul><li>This shape has got a vertical line of symmetry. </li></ul>
- 3. Line Symmetry in the Alphabet <ul><li>Which letters have got lines of symmetry? </li></ul>A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Click to see the lines of symmetry.
- 4. Lines of Symmetry all around us <ul><li>Which of these road signs have got lines of symmetry? </li></ul>Click to see the lines of symmetry.
- 5. Line Symmetry with Pentominoes <ul><li>If you don’t know what a pentomino is, then click here. </li></ul><ul><li>If you have done the pentominoes activity before, then you will know what a pentomino is and how many different pentominoes there are. </li></ul><ul><li>Here they are ... </li></ul>
- 6. Line Symmetry with Pentominoes <ul><li>How many lines of symmetry does each Pentomino have? </li></ul><ul><li>Sort them according to their lines of symmetry. </li></ul>
- 7. Line Symmetry with Pentominoes One Line of Symmetry Two Lines of Symmetry Four Lines of Symmetry Click to start sorting
- 8. Line Symmetry with 7-Pin Polygons <ul><li>If you don’t know what a 7-pin polygon is, then click here. </li></ul><ul><li>If you have done the 7-pin polygons activity before, then you will know what a 7-pin polygon is and how many different ones there are. </li></ul><ul><li>Here they are ... </li></ul>
- 9. Line Symmetry with 7-Pin Polygons <ul><li>How many lines of symmetry does each 7-Pin Polygon have? </li></ul><ul><li>Sort them according to their lines of symmetry. </li></ul>
- 10. Line Symmetry with 7-Pin Polygons One Line of Symmetry Two Lines of Symmetry Six Lines of Symmetry Three Lines of Symmetry Click to start sorting
- 11. Now you know all about line symmetry! END OF PRESENTATION
- 12. Pentominoes <ul><li>A pentomino is made out of five squares that are connected along at least one edge. </li></ul>These are NOT pentominoes. Here is an example of a pentomino. How many different pentominoes can you find? Click here to return to line symmetry.
- 13. 7-Pin Polygons <ul><li>Here is an arrangement of 7 pins. </li></ul>Here are some examples of 7-pin polygons. How many different 7-pin polygons can you find? Click here to return to line symmetry. A 7-pin polygon is a closed shape with straight sides with corners on the pins.
- 14. END OF PRESENTATION

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