Reading an English Ruler CAMS Technology Education Mr. Offutt Mr. Barket

Reading an English Ruler English Units: Miles Yards Feet Inches Fractions of an Inch

Fractions: Bottom Number = Total Parts Denominator Will always be even

Fractions: Top Number = Parts you are measuring Numerator Will always be odd Bottom Number = Total Parts Denominator Will always be even

Determine the bottom Number (Denominator) Hint: Count total parts 2 1”

Determine the Top Number (Numerator) Hint: Count parts you measuring 1 1” 2

Determine the bottom Number (Denominator) Hint: Count total parts 1”

Determine the bottom Number (Denominator) Hint: Count total parts 1” 4 4 4

Determine the Top Number (Numerator) Hint: Count parts you measuring 1” 4 4 4

Determine the Top Number (Numerator) Hint: Count parts you measuring 1” 1 4 4 4

Determine the Top Number (Numerator) Hint: Count parts you measuring 1” 1 2 4 4 4

Determine the Top Number (Numerator) Hint: Count parts you measuring 1” 1 3 2 4 4 4

Determine the Top Number (Numerator) Hint: Count parts you measuring 1” 1 3 2 4 4 4 Do any of these fractions look strange?

Reducing a Fraction 1” 1 3 2 4 4 4 2/4 is an improper fraction To reduce or simplify a fraction find a number that divided evenly into both numbers

Reducing a Fraction 1” 1 3 1 4 4 4 2/4 is an improper fraction To reduce or simplify a fraction find a number that divided evenly into both numbers

Reducing a Fraction 1” 1 3 1 4 4 2 2/4 is an improper fraction To reduce or simplify a fraction find a number that divided evenly into both numbers

Determine the first fraction below: 1”

Determine the first fraction below: 1” 1 8

Determine the remaining fractions on your own 1” 1 8 Reduce / Simplify your fractions Top numbers should be odd

Check your answers 1” 1 8

Check your answers 1” 1 1 8 4

Check your answers 1” 1 3 1 8 8 4

Check your answers 1” 1 3 1 8 8 1 4 2

Check your answers 1” 1 3 5 1 8 8 8 1 4 2

Check your answers 1” 1 3 5 1 3 8 8 8 1 4 4 2

Check your answers 1” 1 3 5 7 1 3 8 8 8 8 1 4 4 2

Determine the first fraction below: 1”

Determine the first fraction below: 1 1” 16

Determine the remaining fractions on your own 1 1” 16 Reduce / Simplify your fractions Top numbers should be odd

Check your answers: 1 1” 16

Check your answers: 1 1” 1 16 8

Check your answers: 1 3 1” 1 16 16 8

Check your answers: 1 3 1” 1 16 16 1 8 4

Check your answers: 1 3 5 1” 1 16 16 1 16 8 4

Check your answers: 1 3 5 1” 1 3 16 16 1 16 8 8 4

Check your answers: 1 3 5 7 1” 1 3 16 16 1 16 16 8 8 4

Check your answers: 1 3 5 7 1” 1 3 16 16 1 16 16 1 8 8 4 2

Check your answers: 1 3 5 7 9 1” 1 3 16 16 1 16 16 16 1 8 8 4 2

Check your answers: 1 3 5 7 9 1” 1 3 5 16 16 1 16 16 16 1 8 8 8 4 2

Check your answers: 1 3 5 7 9 11 1” 1 3 5 16 16 1 16 16 16 16 1 8 8 8 4 2

Check your answers: 1 3 5 7 9 11 1” 1 3 5 16 16 1 16 16 16 16 3 1 8 8 8 4 4 2

Check your answers: 1 3 5 7 9 11 13 1” 1 3 5 16 16 1 16 16 16 16 16 3 1 8 8 8 4 4 2

Check your answers: 1 3 5 7 9 11 13 1” 1 3 5 7 16 16 1 16 16 16 16 16 3 1 8 8 8 8 4 4 2

Check your answers: 1 3 5 7 9 11 13 15 1” 1 3 5 7 16 16 1 16 16 16 16 16 16 3 1 8 8 8 8 4 4 2

Key Point:This fraction pattern repeats between all inches on a ruler! 1 3 5 7 9 11 13 15 1” 1 3 5 7 16 16 1 16 16 16 16 16 16 3 1 8 8 8 8 4 4 2

Key Point:This fraction pattern repeats between all inches on a ruler! 1 3 5 7 9 11 13 15 1” 1 3 5 7 16 16 1 16 16 16 16 16 16 3 1 8 8 8 8 4 4 2 Lets practice this together

Today’s Activity Measure each block (A-F) in your color Use English measurements, NOT Metric Include the whole inches in your measurement Record your answers on your worksheet DO YOUR OWN WORK! Sit quietly when finished

Homework Only Homework assignment in Tech-ed You may take today’s worksheet with you Get help if you need DO YOUR OWN WORK Due next class period Worth 100 Points