Spider Shapes Steve Case NSF North Mississippi GK-8 University of Mississippi March 2007.
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Transcript of Spider Shapes Steve Case NSF North Mississippi GK-8 University of Mississippi March 2007.
![Page 1: Spider Shapes Steve Case NSF North Mississippi GK-8 University of Mississippi March 2007.](https://reader033.fdocuments.us/reader033/viewer/2022051820/56649dbb5503460f94aad289/html5/thumbnails/1.jpg)
Spider Shapes
Steve CaseNSF North Mississippi GK-8
University of MississippiMarch 2007
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NSF North Mississippi GK-8
Spiders
• Members of the arachnid family along with ticks, mites, and scorpions
• Two main body segments: head and abdomen
• Silk glands in abdomen; used by many types of spiders to spin webs
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NSF North Mississippi GK-8
Spiders’ Webs
• Webs spun between branches of trees, bushes, or other objects
• Used to catch flies and other insects• Portions of web non-sticky so spider does not get
trapped• Five major types of web; most common type of web
spun by orb weaver spiders• Web silk stronger than steel
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NSF North Mississippi GK-8
What shapes can we find in a spider’s web?
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NSF North Mississippi GK-8
Circle
• How many sides?– One
• How many corners?– Zero
• Can we find circles in a spider’s web?
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NSF North Mississippi GK-8
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NSF North Mississippi GK-8
Quadrilateral
• How many sides?– Four
• How many corners?– Four
• Different types of quadrilaterals:– Parallelogram, rectangle, rhombus square,
trapezoid • Can we find quadrilaterals in a spider’s
web?
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NSF North Mississippi GK-8
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NSF North Mississippi GK-8
Parallelogram
• How many sides?– Four
• How many corners?– Four
• Is it a quadrilateral?– Yes
• What makes a parallelogram?– Opposite sides of a parallelogram are parallel.
• Different types of parallelograms:– Square, rhombus, rectangle
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NSF North Mississippi GK-8
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NSF North Mississippi GK-8
Rectangle
• How many sides and corners?– Four
• Is it a quadrilateral?– Yes
• Is it a parallelogram?– Yes
• What makes a rectangle?– All corners of a rectangle form right angles.
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NSF North Mississippi GK-8
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NSF North Mississippi GK-8
Rhombus
• How many sides and corners?– Four
• Is it a quadrilateral?– Yes
• Is it a parallelogram?– Yes
• What makes a rhombus?– All four sides of a rhombus are equal in
length.
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NSF North Mississippi GK-8
Square
• How many sides and corners?– Four
• Is it a quadrilateral?– Yes
• Is it a parallelogram?– Yes
• Is it a rectangle?– Yes
• Is it a rhombus:– Yes
• What makes a square?– All sides of a square are equal in length.
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NSF North Mississippi GK-8
Trapezoid
• How many sides and corners?– Four
• Is it a quadrilateral?– Yes
• Is it a parallelogram?– No
• What makes a trapezoid?– Only two sides of a trapezoid are parallel.
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NSF North Mississippi GK-8
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NSF North Mississippi GK-8
Triangle
• How many sides and corners?– Three
• Can we find triangles in spiders’ webs?
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NSF North Mississippi GK-8
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NSF North Mississippi GK-8
Hexagon
• How many sides and corners?– Six
• Do any insects or arachnids build hexagons?
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NSF North Mississippi GK-8
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NSF North Mississippi GK-8
Hexagon
Triangle
Trapezoid Square
Rhombus
Parallelogram
Circle
Rectangle
Let’s Review
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NSF North Mississippi GK-8
Image Sources
“Web Photos.” August 2005. Spiders. Accessed March 15, 2007. <http://www.spiderzrule.com/webaugust05.htm>.