using a ruler to measure uscs to metric / si. objectives - swbat ▪ read and understand a us...
TRANSCRIPT
Basic MeasurementsUsing a Ruler to Measure USCS to Metric / SI
OBJECTIVES - SWBAT▪ Read and Understand a US Customary Ruler
▪ Read and Understand a Metric / International System of Units Ruler
▪ Convert Inches to fractions of inches and decimal
▪ Convert CM to MM on a Metric Ruler
▪ Convert Inches to CM
▪ Find specific Measurements in any scale on a ruler.
WHY DIFFERENT MEASUREMENTS▪ In the US, we use the Customary System ( USCS ) to read
rulers. These are broken down into Feet, Inches, and fractions of inches.
▪ Everywhere outside of the US, the Metric System is used. It is broken down into Meters, Cm (centimeters), and Mm (millimeters).
▪ Currently, the Metric system is being updated. While most of the measurements will be the same, some will change. This new system is known as The International System of Units, or SI for short.
UNDERSTANDING USCS
0 112
UNDERSTANDING USCS
0 1121
4141
818
18
18
UNDERSTANDING USCS
0 1
116
116
116
116
116
116
116
116
UNDERSTANDING USCS
0 1
58
1016
UNDERSTANDING USCS
0 1
716
UNDERSTANDING USCS
0 1 2
11161
UNDERSTANDING METRIC / SI
0 cm 1 cm
Centimeters are divided into 10 Millimeters10 mm = 1 cm 100 cm = 1 meter 1 inch = 2.54 cm
UNDERSTANDING METRIC / SI
0 cm 1 cm
6 mm or .6 cm
UNDERSTANDING METRIC / SI
0 cm 1 cm
3 mm or .3 cm
UNDERSTANDING METRIC / SI1 inch = 2.54 centimeters
How many centimeters is 4 inches?4 x 2.54 = 10.16 centimeters
How many centimeters is 1 foot?12 x 2.54 = 30.48 centimeters
How many inches and is 72 centimeters?72 ÷ 2.54 = 28.346 inches ÷ 12 = 2.36 feet
COMPLETE MEASUREMENT WORKSHEETIn Hand-Out Folder, or on the Website. Everyone must do their own.