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Grade 5 – Unit 5: Geometry Our class is beginning Unit 5: Geometry. The unit begins with students reviewing measuring and classifying angles and triangles. Two topics are investigated in depth in this unit; classifying polygons and graphing points on the coordinate plane to solve problems. Students will investigate the properties of special quadrilaterals, i.e., parallelograms, rectangles, rhombuses, squares, trapezoids, and kites. Students will learn to graph points on coordinate grids and use these grids to represent geometric figures such as triangles and quadrilaterals. They will also graph realistic problem situations on coordinate planes. Some examples of the work you child will be doing are: Students will classify triangles as acute, right, or obtuse based on the measure of the angles. - Example: In triangle ABC, the measure of the angle A is 30° and the measure of angle B is 50°. Classify the triangle as acute, right, or obtuse. Explain your thinking. Students will understand the properties of quadrilaterals. - Example: Which quadrilateral(s) have both pairs of opposite sides as congruent - rectangle, trapezoid, and/or parallelogram? - Example: Which quadrilateral(s) have four congruent angles rectangle, square, and/or rhombus? Students will graph points on a coordinate grid to represent geometric figures. - Example: Graph a rectangle that has an area of 16 square units and a vertex at (0,0). Give the coordinates of the other three vertices. - Example: Graph each of the following sets of points on the grid. Then use your ruler to draw the polygon formed by the points on the graph. (3,5) (3,12) (6, 15) While our class is working on this unit here’s how you can help your child. Practice multiplication and division facts. Help your child to think of how to classify special quadrilaterals. For instance, how are all quadrilaterals the same? What is the difference between a square and a rectangle? Which quadrilaterals are also parallelograms? Encourage your child to use vocabulary like parallel lines, perpendicular lines, right angles, acute angles, opposite sides, consecutive sides, congruent angles, etc. when classifying special quadrilaterals. Reinforce strategies that help your child think flexibly about numbers. Encourage them to think about how to compose, decompose, and group numbers to find efficient ways to solve problems. Encourage your child to explain her/his thinking as he/she solves problems. If you have any questions, please contact your child’s teacher or the Math Science Teacher. For additional information, take a look at the Fairfield Public School Parent Guide at http://fairfieldpublicschoolsk5math.wikispaces.com/home