standard measurements of length
DESCRIPTION
This slideshow was used to introduce standard measurement (inches, feet, yards, & miles) to a 3rd grade class.TRANSCRIPT
Do you measure up?!Measuring using…
INCHESFEET
YARDSMILES
STANDARD SYSTEM - INCHES• Look on your ruler – each of the big numbers
on it represents an inch.
Which of these would you measure in inches?:
STANDARD SYSTEM - FEET
• Now look at that ruler again – does anyone know what unit of measurement that one of these rulers is equal to?
= _____________________
STANDARD SYSTEM - FEET
• What would we measure in feet?
City roads or distances between places
A pencilOur height
FEET & INCHES• Count the number of inches on your foot ruler.
1 foot = ___ inches
FEET & INCHES• Count the number of inches on your foot ruler.
1 foot = 12 inches
Did you know?! -- The lines halfway between each number on a ruler are half-inches! So the bigger line in between 10 & 11 is ____ in.
STANDARD SYSTEM - YARDS• Want to find a quicker way to measure
something than lining up a few 12-in. rulers?
• That’s when you can measure in yards! Where have you heard of something measured in yards?
STANDARD SYSTEM - YARDS• Of course – in football! Every small marking on
the field is 1 yard –OR– 3 feet, because…
1 yard = 3 feet = 36 inches
Ways to remember our units…1 inch = About from the top of Your thumb to the knuckle
1 foot =About an egg carton
1 yard = About the width ofA normal doorway
1 in.
1 ft.
1 yd.
ALL EQUAL!
What about long distance?!• What if you want to measure from your house
to a friend’s house?
What unitwould you use?
STANDARD SYSTEM - MILES• A mile is a long way if you think about it - one
mile = 1,760 yd / 5,280 ft! That would take:
1,760 yardsticks…
…5,280 rulers…
…and don’t even think about measuring it with your thumbs! 1 mile = 63,360 inches!!!
(To the tune of “She’ll Be Coming ‘Round the Mountain…”)
“We’ll be measurin’ with feet, inches, and yards… (Yee haw!)
We’ll be measurin’ with feet, inches, and yards… (Yee haw!)
If 12 inches is a foot……And 3 feet is a yard…Then we’ve got 36 inches in a yard! (One more time!)”
(Click for the tune!)