Longview ISD3rd Grade Math Unit 4

3rd Grade TEKS with Specificities
3.8Geometry and spatial reasoning. The student used formal geometric vocabulary. The student is expected to:
-identify, classify, and describe two-and three-dimensional geometric figures by their attributes. The student compares two-dimensional figures, three-dimensional figures, or both by their attributes using formal geometric vocabulary.
Include:
Two dimensional figures
  • Vertices and sides
Three-dimensional figures
  • Vertices, edges and faces
Two dimensional vocabulary (circle, polygon, triangle, square, rectangle, quadrilateral, rhombus, trapezoid, parallelogram, pentagon, hexagon, octagon, side, vertex)
Helpful manipulatives:
  • Pattern blocks, tangrams, every day items
  • Three-dimensional vocabulary (sphere, cone, cylinder, cube, rectangular prism, triangular prism, square pyramid, triangular, pyramid, vertex, edge, face)
Helpful manipulatives:
  • 3-D geometric shapes
3.9Geometry and spatial reasoning. The student recognizes congruence and symmetry. The student is expected to:
3.9Aidentify congruent two-dimensional figures
Include:
  • Journal writing (create definitions of two-dimensional figures using attributes)
  • Concrete examples
  • Pictorial representations
  • Real world application
Two-dimensional vocabulary (circle, polygon, triangle, square, rectangle, quadrilateral, rhombus, trapezoid, parallelogram, pentagon, hexagon, octagon, side, vertex)
Helpful manipulatives:
Pattern blocks, tangrams
3.9Bcreate two-dimensional figures with lines of symmetry using concrete models and technology
Include:
  • Create 2 dimensional figures and show all lines of symmetry
  • Given the number of lines of symmetry, create the figure
  • Journal writing-create definitions using attributes
  • Pictorial representations on geoboard grid paper
  • Use real-life applications
Helpful manipulatives:
  • Tangrams, mirrors, geoboards, pattern blocks
Vocabulary:
horizontal, diagonal, vertical, symmetrical / 3.9Cidentify lines of symmetry in two-dimensional geometric figures
Include:
  • Given any two-dimensional geometric figures, determine all lines of symmetry
  • Journal writing (create definitions/attributes)
  • Use pictorial representations on geoboard grid paper
  • Use real life applications
Vocabulary
horizontal, diagonal, vertical, symmetrical
Helpful manipulatives:
  • Tangrams
  • Pattern blocks
  • Geoboards
Unit 4 Geometry
Vocabulary Adventure
  • Geometry Jungle pp. 65-113
Vocabulary is a critical component of geometry. Use these pages along with hands-on lessons with 2-D and 3-D figures.

Investigations

Turtle Paths Student Sheet 11, 12, and 13 (triangles)
Exploring Solids and Boxes
Investigation 1 “Sorting and Describing”
  • Session 1 “Sorting Polyhedra”
  • Session 2 “ What’s My Shape?”
Investigation 2 “Building Polygons”
  • Session 1-2 “Building Polygons”
  • Session 4-5 “Building Polyhedra From Descriptions”
Mathematical Thinking at Grade 3
Investigation 2 “Doubles and Halves”
  • Session 1 “Pattern Blocks”
  • Session 3-4 “Finding Doubles and Halves”
Flips, Turns, and Area (Note: Although transformations is not part of 3rd grade TEKS, congruence and symmetry are the foundations for those movements. Rotations, reflections, and translations should not be the focus of this lesson; however, correct vocabulary should be used.)
Investigation 1 “Motions with Tetrominoes”
  • Session 1 “Tetrominoe”
Investigation 2 “Finding Area”
  • Session 2-3 “A Poster of 4 Unit Shapes”
/ Math Essentials
Pages 69-80
Measuring Up
Chapter 9 Geometry and Spatial Reasoning
MathLearningCenter
Teacher Reference Manual Chapter 11 Geometry pp. 86-94
Volume 1—Contact
Lesson 17 “Apple Symmetry”
Lesson 26-27 “Symmetry”
Lesson 36 “Football” (rectangles)
Lessons 50-53 “Shapes”
Lesson 54 “Solids”
Lessons 61-62 “Congruence/Paper Folding”
Lesson 91 “Spatial Visualization” (rectangles in empty boxes)
Volume 2—Contact
Lesson 154 “Solid Shapes” (real world)
Volume 3
Lesson 16 “Congruence & Area” (geo-boards)
Lesson 37 “Reflective and Rotational Symmetry”
Lesson 42 “Pattern Block Explorations”
(reflective and rotational symmetry)
Lesson 49 “Geoboard Shapes”
TEXTEAMS (Geometry section)
  • Alphabet Symmetry
  • Geoboard Activities (polygons, symmetry, congruence)
  • Paper Folding Pinwheels
  • Reflect It
  • Wax Paper Transformations
  • Symmetry with Tiles
  • Lines of Symmetry (polygons)
  • Oh No! My Ominoes!
  • Tangram Geometry
  • Polyhedron Discoveries (good student recording sheet)
  • Scavenger Shape Hunt
  • Geo-shape Grab Bag
Problem Solving Strategies
“Find a Pattern”
Count On It pp. 34-37
Measuring Up Lesson 8
Problem Solver II
  • #14 pp. 28-29
  • #57 p. 96
  • #58 p. 97
  • #59 p. 98
Also appropriate for geometry
  • #23 pp. 46-47
  • #24 pp. 48-49
  • #25 pp. 50-51 (This one uses the term “diamond”; be sure students know the geometrical term is “parallelogram”.)
  • #72 p. 111
  • #73 p. 112
  • #74 p. 113
  • #75 p. 114
Notes:

8/27/2007DRAFT 3