Perimeter of the Lovely El
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Perimeter of the Lovely El “What is the perimeter of this shape?” (all the angles are 90 degrees )
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Perimeter of the Lovely El. “What is the perimeter of this shape?” (all the angles are 90 degrees ). Perimeter of the Lovely El. “Perimeter: the distance around an area.”. It doesn’t have to be a “regular” shape, either. . The perimeter around Parkland College is 1.45 miles. - PowerPoint PPT Presentation
Transcript of Perimeter of the Lovely El
Area of the Lovely El
Perimeter of the Lovely ElWhat is the perimeter of this shape?(all the angles are 90 degrees )
These are called complex shapes in math books. 1Perimeter of the Lovely ElPerimeter: the distance around an area.
It doesnt have to be a regular shape, either.
The perimeter around Parkland College is 1.45 miles
Peri means around. 8cm7cm4cm6cm2cm1cm perinatal means happening around the birth time
perimeter means measuring around a shape.
8units7units6units2units1unit The units have to be the same thing. If one side is measured in centimeters and the other in inches or feet or miles, addingthe numbers together would just give you a number, not the answer to a question.(Its same to same in the addition game!)
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Perimeter: Add the distances of each side.8units7units4units6units2units1unitNotice that youre measuring a distance, so your starting point is 0, not one. Youre counting the spaces the distance not the lines used to mark each unit.
What if we dont know all the distances? 6units3units
0 We dont have to measure them.We can still figure things out, becauseas long as those angles are 90 degree perfect corners, we can use what we knowabout Parts and Wholes and just watch
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What if we dont know all the distances? 6units3units0 4units2units Trace these lines with your finger.
Theyre parallel going *exactly* the samevertical (up and down) direction.Theyd never meet even if they went on forever to infinity.
What if we dont know all the distances? 6units3units0 4units2units Which distance is the whole way from top to bottom?
Im the whole! Me!
What if we dont know all the distances? 6units3units0 4units2units The part were looking for where is it? ?
Im the missing *part*Im the whole! Me!
What if we dont know all the distances? 6units3units0 4units2units The part you already know is where?
Im the missing *part*Im the part you know!Im the whole! Me!
What if we dont know all the distances? 6units3units0 4units2units To find a part. Subtract the part from the whole.
Whole minus part = part
Im the missing *part*Im the part you know!Im the whole! Me!
One more time 6units3units0 4units2units First trace the lines to find the ones going the samedirection.
Im the missing *part*Im the part you know!Im the whole! Me!
One more time 6units3units0 4units2units First trace the lines to find the ones going the samedirection.Next, figure out which are the parts, and which is the whole.
Im the missing *part*Im the part you know!Im the whole! Me!
One more time 6units3units0 4units2units First trace the lines to find the ones going the samedirection.Next, figure out which are the parts, and which is the whole.Subtract to find a missing part; add to find a whole.
Im the missing *part*Im the part you know!Im the whole! Me!
You might want to backtrack 6units3units0 4units2units Go through these steps then figure out the other missing side!
Im the missing *part*Im the part you know!Im the whole! Me!????units
Some other resourceshttp://www.bbc.co.uk/bitesize/ks3/maths/measures/ Make all the practice worksheets you want http://www.worksheetworks.com/math/geometry/measuring-figures/perimeter-area.html
