Geometry

2D Shapes

Lesson

– BrainPOP: Geometry introduction
– BrainPOP Jr.: Plane shapes (basic review)
– BrainPOP: Polygons
– BGFL: All about 2-D shapes
– BrainPOP: Types of triangles
– BBC: Properties of quadrilaterals

Examples

3-Sided: Trigon or Triangle
       – Nature: white and purple flowerwhite flowerintersecting tree branchesclouds
       – Man-Made: patchrecycling symbol

4-Sided: Tetragon or Quadrilateral
       – Man-Made: patch

5-Sided: Pentagon
       – Nature: okraMorning Glory flower
       – Man-Made: patch

6-Sided: Hexagon
       – Nature: honeycombcloud formation at Saturn’s north polebasalt (volcanic rock)
       – Man-Made: Fort JeffersonChinese checker boardpatch

– 7-Sided: Heptagon
       – Man-Made: British 50 pence coinBritish 20 pence coinBarbados dollar coin,Botswana pula coinpatcharrow

8-Sided: Octagon
       – Man-Made: stop signumbrellaVichy Pastilles French candySwarovski’s crystal,patch 1patch 2

9-Sided: Nonagon
       – Man-Made: Baht Rama coinwooden puzzlepatch

10-Sided: Decagon
       – Nature: star fruit
       – Man-Made: patchtop of a mug

11-Sided: Hendecagon
       – Man-Made: Canadian dollar coin (loonie)Susan B. Anthony dollar coinpatch

12-Sided: Dodecagon
       – Man-Made: Vietnamese 20 đồng coinletter Eletter HBritish three pence coin,Australian fifty cents coinChinese checkers board

13-Sided: Tridecagon

14-Sided: Tetradecagon

15-Sided: Pentadecagon

16-Sided: Hexadecagon

17-Sided: Heptadecagon

18-Sided: Octadecagon
       – Man-Made: Chinese checkers board

19-Sided: Nonadecagon

20-Sided: Icosagon

Manipulatives

Games

– Arcademics: Kangaroo Hop (timed & up to 4 players – all polygons)
– BBC: The Legend of Dick and Dom (all polygons)
– BBC: Quadrilateral and Triangle Sorter
– Crickweb: Triangle Sorter

Quizzes

– IXL: Identifying 2-D and 3-D shapes
– Mr. Anker: Triangles (set 1)
– Mr. Anker: Triangles (set 2)

Printable Worksheets

3D Solids

Lesson

– BrainPOP Jr.: 3-D shapes
– BBC: 3-D shapes & nets
– BrainPOP: Polyhedrons
– BrainPOP: Volume of prisms

Examples

– Cone

– Cube

– Cylinder

– Rectangular prism

– Triangular prism

– Triangular pyramid

– Sphere

Manipulatives

Create 3D Models

Create 3-D Characters and Animals
    – Cubee Craft
    – Cartoon characters
    – Birds

Games

– Starrmatica: Earth Exploration
– BBC: Mission 2110
– Mr. Nussbaum: Shape Invaders & the Golden Hexagons

Printable Worksheets

Lines

Manipulatives

Games

Quizzes

Printable Worksheets

Angles

Lesson

– BrainPOP: Angles
– BBC: Angles
– Math is Fun: Right angles
– Math is Fun: Acute angles
– Math is Fun: Obtuse angles

Manipulatives

Games

– Crickweb: Protractor & Angles

Quizzes

– Mr. Anker: Comparing to right angles (set 1)
– Mr. Anker: Comparing to right angles (set 2)

Printable Worksheets

Congruence

Lesson

– BrainPOP Jr.: Congruent, incongruent, & similar figures
– BrainPOP: Similar figures
– BrainPOP Jr.: Basic transformations
– BrainPOP: Transformations
– BBC: Transformations
– ReFLection (FLip – vertical line)
– ReFLection (FLip – horizontal line)
TranSLation (SLide)
– RoTaTion (Turn)

Examples

Nature
       – Butterfly
       – Mask 1
       – Mask 2
       – Crab
       – Dragon fly
       – Spider
       – Leaf bug

Man-Made
       – Taj Mahal
       – Taj Mahal water reflection
       – Memorah
       – Wheel of Dharma
       – Cross
       – Star of David

Manipulatives

– Math Playground: Transformations manipulatives

Games

– BBC: Transformations
– Manga High: TranStar
– Math Playground: Shape Mods (advanced)

Quizzes

Printable Worksheets

Super Teacher (scroll down to the middle)

Symmetry

Lesson

– BBC: Symmetry
– BBC: Mission 2110
– Innovations Learning: Symmetry in 2-D shapes
– Can you find examples of symmetry in this painting?
– Are faces really symmetrical?
– Symmetry in words

Manipulatives

Quizzes

Printable Worksheets

Tangrams

Lesson

– Archimedes: Legend
– Archimedes: History
– Teachnet: Grandfather Tang’s Story

Manipulatives

Games

– Puzzle Choice: Tangram House

Quizzes

Printable Worksheets

– About.com: Small pieces
– About.com: Large pieces

Need Help From the Textbook?

Ch. 12: Shapes & Solids

Broken Links

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