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PERIMETER AND AREA

PERIMETER AND AREA. Learn to figure out how to measure these…. PERIMETER. DEFINITION: THE DISTANCE AROUND A FIGURE All you do is ADD up the lengths of the SIDES of a polygon. WHAT DO WE NOTICE?. 10. NOW ADD UP ALL OF THE SIDES TO FIND THE PERIMETER. 5. 5. 10.

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PERIMETER AND AREA

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  1. PERIMETER AND AREA Learn to figure out how to measure these…

  2. PERIMETER • DEFINITION: THE DISTANCE AROUND A FIGURE All you do is ADD up the lengths of the SIDES of a polygon.

  3. WHAT DO WE NOTICE? 10 NOW ADD UP ALL OF THE SIDES TO FIND THE PERIMETER 5 5 10 5 +10 + 5 + 10 = 30

  4. WHAT DID WE DO? 10 5 5 10 • Measurements • Add Up Sides • Get the Sum • Answer! 30 5 +10 + 5 + 10 =

  5. TRY THIS ONE!!!! FIND THE PERIMETER 12 8 8 12 HINT:+ 12 +8+12+8 = 40

  6. FIND THE PERIMETER 7 7 + 7 + 7 = \ / 14 7 + 7 = 21 7 = 21 PERIMETER OF THIS

  7. HELP WITH PERIMETER • ADAM ANT HELPS WITH PERIMETER • HELP BUILD A FENCE

  8. NOW WE WILL… • Go back to your seats. • Get out your MATH BOOKS. • Open to Page 368 and 369. GO DO THAT NOW PLEASE!

  9. AREA HOW DO YOU FIND THE AREA OF A SHAPE?

  10. My Name Is Stan Gable. I am the wealthiest and smartest man on the face of the Earth. I made all of my money by stumping children in math. I am here to try and stump you so I can make some more money and show just how intelligent I really am. You think you are smarter than me? I’ll make a deal with you all. I’ll give you some information about AREA. Then I’ll give you a few problems. If you get them right, I’ll leave you alone. But, if you get them wrong, I will take this cash all the way to the bank and buy your school where there will be no more fun EVER!!!!!!! The choice is yours… Good Luck! You sure will need it!!!!! MWAHAHAHAHAHA!!!! STAN GABLE INTELLIGENT MILLIONAIRE

  11. WHEN MEASURING AREA… • WHEN WE MEASURE AREA, WE USE SOMETHING CALLED UNITS. • UNITS TELL US WHAT MEASURING TOOL WE ARE USING. • WE USE THE FOLLOWING:

  12. UNITS TO MEASURE AREA • SQUARE UNIT • SQUARE INCH • SQUARE CENTIMETER • SQUARE YARD • SQUARE FEET

  13. AREA • DEFINITION: NUMBER OF SQUARE UNITS NEEDED TO COVER A FIGURE 1 in 1 in The picture shows an area of 1 Square Inch HOW DID YOU GET THAT?

  14. AREA The measurements of the square’s sides are 1 in, 1 in., 1 in. and 1 in. That makes the perimeter 4 in.(1 in. + 1 in. + 1 in. + 1 in.= 4 in.) SO, that makes 1 in. x 1 in. = 1 SQUARE INCH To find the AREA, you have to MULTIPLY the LENGTH of the shape by the WIDTH of the shape. 1 in Length x Width = Area OR L x W = A 1 in

  15. YOU CAN COUNT HOW MANY SQUARES THERE ARE TOTAL OR… 3 UNITS 2 UNITS WIDTH LENGTH Length x Width = Area L x W = A 3 units x 2 units = A Area = 6 SQUARE UNITS

  16. 5 UNITS 3 UNITS WIDTH I’d Knew You’d Get It! Try This Next Problem. It Will Surely Stump You! LENGTH Length x Width = Area L x W = A 5 units x 3 units = A Area = 15 SQUARE UNITS

  17. 6 UNITS So I See You Got Another One Correct! I Will Just Have To Do Something About This… WIDTH 4 UNITS LENGTH Length x Width = Area L x W = A 6 units x 4 units = A Area = 24 SQUARE UNITS

  18. 6 UNITS WIDTH 2 UNITS WOW!!! You really impressed me. I guess I can’t buy your school. But don’t worry, I’ll be back!!!! LENGTH Length x Width = Area L x W = A 6 units x 2 units = A Area = 12 SQUARE UNITS

  19. YOU BEAT STAN!!!! • WELL DONE MATH WIZARDS!!!! YOU BEAT STAN!!! NOW TO MAKE SURE HE DOESN’T RETURN, LET’S MAKE SURE WE DO MORE PRACTICE ON AREA!!! WE DON’T WANT HIM TAKING ALL THE FUNOUT OF SCHOOL!!!!

  20. AREA REVIEW GAME • SHOW STAN WHO’S BOSS YOU HAVEN’T SEEN THE LAST OF STAN GABLE! YOU JUST GOT LUCKY THIS TIME!!!!

  21. IN YOUR MATH BOOKS… • PAGE 370-371 • TRY TO DO PROBLEMS 1 TO 5 • WE WILL GO OVER THE PROBLEMS IN 10 MINUTES. • IF YOU FINISH EARLY, YOU MAY COMPLETE ANY WORK THAT’S NOT FINISHED OR SILENT READ! • GO!

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