Core Objective (s): Draw and/or model plane figures including
triangles, quadrilaterals (squares, rectangles, parallelograms) pentagons, hexagons, and octagons. (2GS1-4)
State Standard: (2IVA1) Describe, model, and draw two-dimensional geometric shapes to develop spatial sense and describe and model three dimensional geometric shapes to develop spatial sense. * The student will draw models of two-dimensional shapes including triangles, quadrilaterals (squares, rectangles, parallelograms), pentagons, hexagons, and octagons.
Overview: The teacher will review common shapes in geometry
through the use of manipulatives and the books, Color Zoo and
Shapes, Shapes. The teacher will introduce new shapes using additional books, The Shapes Game and The Tangram Magician. Students will learn the attributes of each of the new shapes and create a figure through manipulatives and Internet activities. As a culminating activity, the students will draw a model using correctly formed geometric shapes.
Purpose/Essential Question:
What are the geometric shapes?
What are the attributes of these geometric shapes?
Where can you locate these shapes in the real world? How do you draw these shapes?
Time Frame: 2 days ( two 45 minute math periods)
Resources:
Overhead projector/pens or Chart Paper
Transparent Pattern Block Shapes (for Overhead Use)
Or shape cutouts
Chalkboard, chalk
Sentence strips - * with prepared vocabulary terms
Magazines, newspapers
Scissors/pens/markers/crayons/pencils/glue
Televisions/averkey/computers
Internet access
Stencils- (circle/square/rectangle/triangle/pentagons/
hexagons, octagons)
Tangrams
Grid/pattern tiles
Drawing paper
Ziploc bags/napkins
Books:
Elhert, Lois; Color Zoo
Ernst, Lisa; The Tangram Magician
Hoban, Tana; Shapes, Shapes, Shapes
*Snacks - suggested: Circle shapes- Ritz crackers, pickle chips, banana slices, pepperoni slices, round cookies. Triangle shapes-nacho chips, pizza slices, cheese cut into triangles. Square shapes- Wheat Thins, saltines. Rectangle shapes- club crackers, graham crackers, granola bars.
Assessment:
Day Two : Shape Drawing of Truck Rubric
This rubric will assess a student's drawing of a variety of shapes. The teacher will give each student a piece of drawing paper and crayons, pencils, and/or markers. Students will be instructed to draw a truck using only the designated shapes. The shapes should be drawn in accordance with their attributes.
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1 point is awarded for each correctly formed shape. Thus
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1 point X 4 circles
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= 4 possible points
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1 point X 1 square
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= 1 possible point
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1 point X 1 tall rectangle
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= 1 possible point
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1 point X 2 pentagons
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= 2 possible points
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Total of :
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8 possible points
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So that:
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6-8 points = +
4-5 points = /
3 or less points = -
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Instructional Activities:
Day One:
- The teacher will introduce the lesson on geometric figures by telling students that they will learning more about shapes and how they can find these shapes all around them. The teacher will have students come to the reading corner and listen as you read
Color Zoo by Lois Elhert and Shapes, Shapes, Shapes by Tana Hoban. Tell students that they are to look for shapes not colors in these familiar stories. After the initial reading of the books, the teacher will flip back through the books and give students time to locate all the shapes and call them by name. The teacher will draw each shape on the chalkboard or chart and locate the sentence strip with the shape names already prepared. Students will match the word strip with the shape. The teacher will review the attributes of each of the shapes (circle/square/rectangle/triangle, pentagon, hexagon, octagon), writing brief notes beside each.
- The teacher will pass out sets of pattern tiles to small groups of students. The groups will be asked to sort the tiles by shapes. The teacher will monitor the sorting activity. As students finish sorting, the teacher will hold up a tangram shape, and ask students to find a shape in their group that matches the teacher's shape. The students will be asked to name the shape and give attributes of the shape. The teacher will repeat this process for all shapes.
- The teacher will pass out drawing paper, stencils, and crayons or markers to the small groups of students. The teacher will show the tangram shapes to the students once again; tracing the shapes with her fingers and calling notice to the attributes of each. The students will be asked to trace, using the set of stencils, each shape as the teacher names the shape. Students can work as partners to hold the stencils for tracing. Students will label the shapes upon completion of the tracing activity.
- The teacher will have the students draw the shapes without the aid of stencils. The students are to design their own figure (as in Color Zoo); students can design animals, houses, people, etc., using the shapes. Students will share their shape pictures with the class. The sharing student will ask members of the audience to find certain shapes within his/her picture.
- The teacher will direct the students to the television as she prepares
the website: www.mathforum.com/varnelle/kgeo6
Students will discuss and actively participate in the game for shapes. They will use the grid pattern or pattern tiles to make a design. The teacher will guide them through the activity.
Day Two:
- The students will meet in the reading corner. The teacher will refer to the chart from Day One. She will point to a certain shape and ask students to name it, draw it, and describe it.
- The teacher will read The Tangram Magician by Lisa Ernst to the class. The teacher will have a set of premade pictures or word cards for the following: swan, camel, sailboat, house, tea set, dog, and a cat. * Teachers who wish to use picture cards may like to visit
www.animationfactory.com
The teacher will shuffle the cards and ask the students to sequence the picture/word cards in order in which the magician turned into each of the pictures. Upon doing so, the teacher will refer back to the book, where the magician asked the reader to help him decide which animal to become next ( lion, rooster, snake, raccoon, goose). Students will work in small groups to create their chosen animal using
tangrams. Have students trace each shape in the animal creation. These pictures can be displayed or assembled into a class Shape Book.
- Students will explore shapes in the classroom. They will look for examples of each of the shapes (circle, square, triangle, rectangle, pentagon, hexagon, octagon) and discuss their findings. The teacher may like to adapt this activity to an I Spy game. " I spy with my little eye something the shape of _________. "
For the assessment, the teacher will draw each of the shapes on the chalkboard. The teacher will write a number under each shape. Using drawing paper, the students will be instructed to draw a specific object using the shapes the teacher indicates by number. The teacher will ask them to draw a truck using four number 1s, one number 3, one number 5, and two number 7s.
Students will share their Shape Trucks with the class. The teacher will assess their drawings.
Reference:
http://www.arcytech.org/java/patterns/
http://www.mathforum.com/varnelle/trianglegrid
For use on card stock for accompanying the Internet activity.
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