geometry 1 st grade geometry lesson. content strand addressed geometry strand students will: use...
DESCRIPTION
Geometry Content Strand 1 st Grade 1.G.1 Match shapes and parts of shapes to justify congruency 1.G.2 Recognize, name, describe, create, sort, and compare two- dimensional and three-dimensional shapes 1.G.3 Experiment with slides, flips, and turns of two-dimensional shapes Geometry 1.G.4 Identify symmetry in two-dimensional shapesTRANSCRIPT
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Geometry
1st Grade Geometry Lesson
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Content Strand Addressed
Geometry Strand Students will: • use visualization and spatial reasoning to
analyze characteristics and properties of geometric shapes;
• identify and justify geometric relationships, formally and informally
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Geometry Content Strand 1st Grade
• 1.G.1 Match shapes and parts of shapes to justify congruency
• 1.G.2 Recognize, name, describe, create, sort, and compare two- dimensional and three-dimensional shapes
• 1.G.3 Experiment with slides, flips, and turns of two-dimensional shapes Geometry
• 1.G.4 Identify symmetry in two-dimensional shapes
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Process Strands AddressedCommunication Strand Students will: • communicate their mathematical thinking coherently and clearly to peers,
teachers, and others• use the language of mathematics to express mathematical ideas precisely. Connections Strand Students will: • recognize and use connections among mathematical ideas; recognize and
apply mathematics in contexts outside of mathematics. • Recognize and apply mathematics to objects, pictures, and symbols Representation Strand Students will: • create and use representations to organize, record, and communicate
mathematical ideas; • use representations to model and interpret physical, social, and
mathematical phenomena.
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Vocabulary• Between• Next to, beside• Far from/near• Above/below• Right/left • Lines-horizontal; vertical
perpendicular; parallel• Angle formed by two rays or
two line segments with a common end point.
• Plane –flat• Parallel lines - lines in the same
plane that are always the same distance apart - that do not
cross. • Similar – same shape – not
necessarily the same size• Congruent – having exactly the
same size and shape. • Dimensions the size and shape
of an object. For example: length, width, height, etc.
• 2 Dimensional – 2 planes• 3dimensional – 3 planes• Solid—three-dimensional; not
flat • Face—flat surface of a three-
dimensional figure
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Objectives
• Recognize and describe geometric shapes • Describe and compare attributes of two-
dimensional shapes.• Identify, describe, and classify two-
dimensional shapes and three dimensional forms
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Geometry
• Tell students they will be studying a certain kind of mathematics called geometry. Also tell them that they already know a lot about geometry and that they are going to learn the official mathematical terms for some of the things that they know.
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Shapes• Triangle - A plane figure having three angles and
three sides. http://demonstrations.wolfram.com/TypesOfAngles/
• Square - A plane figure having four equal sides and four right angles.
• Rectangle- A four sided plane figure with four right angles.
• Circle - a round figure bound by a single curved line where each point is equally distant from the center of the circle. http://demonstrations.wolfram.com/GeometricElementsOfACircle/
• Ellipse
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Symmetry
• similarity of form or arrangement on either side of a dividing line.
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3 Dimensional Shapes
• Cube - a three-dimensional figure with six square faces.http://demonstrations.wolfram.com/NumberedCube/
• Sphere- a three-dimensional round body
• tetrahedron- a three-dimensional object with faces in the shape of a triangle http://nlvm.usu.edu/en/nav/frames_asid_128_g_2_t_3.html?open=instructions&from=topic_t_3.html
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• A Face is a flat surface of a three-dimensional figure
• Vertex In a three-dimensional object, the Vertex is the point where two edges intersect or meet.
• Edges are where the faces in a three-dimensional figure meet.
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2 Dimensional and 3 dimensional FUN(Really an assessment)
• file:///Users/alisonfricke/Downloads/castle_shapes/Introduction/StarterActivityPart2.htm
• http://www.ngfl-cymru.org.uk/vtc/build_it/eng/Introduction/default.htm
• http://www.ngfl-cymru.org.uk/vtc/castle_shapes/eng/Introduction/default.htm
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Assessment
• What shapes have no sides and no corners?• What shape has four sides ? • Name a shape with a square face.