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### We found 786 resources with the concept 2-d shapes

Lesson Planet

#### Polygons

Second graders view a PowerPoint presentation on Identifying Polygons by their number of sides and their individual properties. They separate polygon tiles into groups by their attributes.

Lesson Planet

#### Polygons

Students work together to create mobiles with different polygons. They research the polygon and list its characteristics. They may present to the class if they chose to.

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#### Don't Box Me In

Learners explore the relationship between flat and three-dimensional shapes. They identify the names of 3-D shapes and construct cubes from squares.

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#### Words in the News: Venezuela Plane Crash

Learners discuss what can go wrong during a plane flight. In groups, they work together to match new vocabulary words to their definition. They read an article about a plane crash in Venezuela and answer questions.

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#### Tessellations

Students explore the geometric transformations used to generate a tessellation. The role of the Dutch artist, M.C. Escher in the development of procedures to generate tessellations is examined and transformations to create Escher-like...

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#### Polygon Search

Students investigate a variety of two-dimensional polygons which are divided and combined to determine various properties. The figures are compared, contrasted, and classified.

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#### Castles

Students create a scale model to a castle using the dimensions they were given. They calculate the surface areas and volumes of each section of their castle.

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#### Tunnel Traps

Young scholars identify shapes that match specific shape descriptions involving a range of geometric terms and correct polygon names. They utilize a mathematics educational software program to gain practice.

Lesson Planet

#### Who Am I? (Middle School)

Third graders complete a classroom game used to build understanding of two and three-dimensional shapes. Diagonals, sides, regularity, congruency, angle measurements, parallels, perpendicular, faces, and edges are a few of the vocabulary...

Lesson Planet

#### Around and Around We Go

Fourth graders discover that a polygon is a closed figure formed by line segments, and that the perimeter of a polygon is the sum of the lengths of its sides. They utilize a worksheet imbedded in this plan to gain lots of practice with...

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#### Polygons

Fourth graders identify and describe lines, shapes, and solids using formal geometric language. They use Inspiration to create a graphic organizer and outline of polygons.

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#### Congruence Theorems

Students use an applet to explore the conditions that guarantee uniqueness of a triangle, quadrilateral, or pentagon, regardless of location or orientation. Each set of conditions results in a new congruence theorem.

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#### Mimicking Nature; Science, Aviation, Flight, Wings

Students consider the relationship between form and flight and investigate the history of man made flight and how wing shape and flexibility affects the maneuverability of an aircraft.

Lesson Planet

#### Tessel Your Way to Nagano!: Olympics, Winter Sports, Snowboarding, Graphic Design, Geometry, Math, M.C. Escher, Tessellations

Students create Post-It note fundamental regions to tesselate. They make tesselations using computer software or websites. They create a jacket design with tesselation and determine the cost of production.

Lesson Planet

#### Two-Dimensional Objects

Students identify two-dimensional shapes and explain the similarities between two-dimensional shapes. They construct their own square and rectangle. They then share their shapes in small groups because every shape be a different size.

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#### Lines, Rays, Line Segments, and Planes

Students are introduced to lines, rays, line segments and planes and study the differences between them. They also practice graphing lines, rays, line segments and planes

Lesson Planet

#### Geometry in Tessellations

Students examine tessellations and their geometric properties. Students also develop a better understanding of lines, planes, angles, and polygons.