Parents I am looking forward to seeing you at Open House this Thursday from 6-7pm. Hope you can make it to take a look at what’s happening in class and to say hello!
Students have been learning about the following skills/concepts in Geometry.
Transformations: A transformation is a rule that results in a change of position, orientation or size. They include translations (slides), reflections(flips) or rotations (turns).
Reflections: A flip of a 2D shape; each point in a 2D shape flips to the opposite side of the line of reflection, but stays the same distance from the line.
Translation: A slide of a shape; the slide must be on a straight line.
Rotation: a turn of a 2D shape; each turn can be identified as a 1/4, 1/2, 3/4 or full (1) turn.
Congruent: When a shape is congruent it means it is identical in size and shape. In order to be sure a shape is congruent you can check 2 ways.
1) tracing paper – trace the shape, cut out, match to other shape
2) Ruler + Protractor – Measure all side lengths and angles to see if they are identical.
Prism: A 3D shape with opposite congruent bases. The other faces are parallelograms (usually rectangles).
Pyramid: A 3D shape with just one polygon for a base. The pyramid is named for the shape of it’s base. The other faces are triangles and meet at a single vertex. (eg: square based pyramid)
Net: A net is a group of 2D shapes that you can fold to create a 3D solid. Students should be able to draw nets for 3D solids and identify which 3D shapes can be made from a net.
We have looked at, learned about and examined the attributes of 2D shapes and how these shapes can flip, slide and turn ( reflect, translate and rotate). This week will move on to examine the properties of 3Dimensional solids. We will be examining number of vertices, faces, bases that these shapes have and sort them according to their attributes. You can practice your skills here!
What is a …..
Parallelogram: Quadrilateral with 2 sets of parallel sides
Quadrilateral: A shape with four sides
Congruent: Having the same size and shape.
Parallel: Parallel lines are lines that are the same distance apart for their whole length, like railroad tracks.
Acute Angles: Angles that are less than 90 degrees.
Obtuse Angles: Angles that are greater than 90 degrees.
Right Angles: Angles that are 90 degrees.
Vertices: A vertex (one) is a corner where two lines meet.
Sides: A line that forms the edge of a shape.
Polygon: A shape where all the lines connect.
Pentagon: A polygon with 5 sides.
Hexagon: A polygon with 6 sides.
Octagon: A polygon with 8 sides.
Decagon: A polygon with 10 sides.
Nanogon: A shape with 9 sides.