# Reading an English Ruler CAMS Technology Education Mr

• Slides: 50

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 1” 2

• 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 4 2 4 4

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

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

• Reducing a Fraction 1” 1 4 2 4 3 4 • 2/4 is not in its simplest form • To reduce or simplify a fraction find a number that divided evenly into both numbers

• Reducing a Fraction 1” 1 4 3 4 • 2/4 is not in its simplest form • To reduce or simplify a fraction find a number that divided evenly into both numbers

Reducing a Fraction 1” 1 4 1 2 3 4 • 2/4 is not in its simplest form • 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 8 1”

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

• Check your answers 1 8 1”

• Check your answers 1 8 1” 1 4

• Check your answers 1 8 1 4 3 8 1”

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

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

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

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

• Determine the first fraction below: 1”

• Determine the first fraction below: 1 16 1”

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

• Check your answers: 1 16 1”

• Check your answers: 1 1 16 8 1”

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

A B C D E F Red Green White Blue 4 1/16 ” 5 5/8 ” 9 1/2 ” 6 9/16 ” 8 1/4 ” 6 1/8 ” 4 1/16 ” 8 5/8 ” 5 ½” 7 9/16 ” 8 1/8 ” 4 1/2 ” 5 5/ 8 ” 8 1/16 ” 6 1/4 ” 9 1/8 ” 6 1/16 ” 4 ¼” 9 5/8 ” 7 1/4 ” 9 9/16 ” 7 ½” 5 9/16 ” 5 1/16 ”

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