![]() Knowledge of shape properties will include angles and symmetry of these polygons.Ĭhildren will describe shapes and identify them using their properties including symmetry and angles. They might be asked to sort shapes according to their properties using Venn diagrams and Carroll diagrams.Ĭhildren are taught to compare lengths and angles of polygons to decide if they are regular or irregular. The vocabulary ‘polygon’, ‘regular’ and ‘irregular’ will be used.Ĭhildren will be given a range of polygons to sort into regular and irregular this might be be completing practical tasks or using ICT.Ĭhildren will be taught to distinguish between regular and irregular polygons based on reasoning about equal sides and angles.Ĭhildren will be given shapes to sort and asked to explain why the polygon is regular using the properties of angles and sides.Īt the end of KS2 children begin to find unknown angles in regular polygons.Ĭhildren will be shown how to calculate unknown angles in polygons using their knowledge of angles and a given formula. The hendecagram represents the Qliphoth and the Tree of Knowledge, adverse to the Sephiroth of the Tree of Life in the Qabbalah. They will be introduced to heptagons, nonagons and decagons. An eleven pointed star is called a hendecagram. ![]() The triangle, quadrilateral and nonagon are exceptions, although the regular forms trigon, tetragon, and enneagon are sometimes encountered as well. What is the shape?Ĭhildren will extend their knowledge of polygons to include different types of triangles and quadrilaterals. Individual polygons are named (and sometimes classified) according to the number of sides, combining a Greek -derived numerical prefix with the suffix -gon, e.g. As there are is infinite number of them this would not be possible. Further, whist many polygons have specific names many do not. It follows that all vertices are congruent, and the polyhedron has a high degree of reflectional and rotational symmetry. there is an isometry mapping any vertex onto any other). The preferred (and commonly accpeted) name of a normal 11-sided polygon is 'hendecagon'. In geometry, a uniform polyhedron is a polyhedron which has regular polygons as faces and is vertex-transitive (transitive on its vertices, isogonal, i.e. They will describe shapes using the properties, for example: This shape has 3 corners and 3 sides. Some might say an 'undecagon', but this is actually incoorect as it is a mixture of the greek and latin nominclature. ![]() They will look at real-life examples of shapes as well as pictures.Ĭhildren will be taught to identify properties of shapes such as the number of sides and vertices (corners).Ĭhildren will count the number of sides and corners on the shape. Children are taught to name common 2D shapes including polygons such as squares, rectangles, triangles, pentagons, hexagons and octagons.Ĭhildren may learn the shapes through matching activities, going on a shape walk in the school grounds, flash-cards and games.
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