CLE
M
/s/t: Fractions
Lesson Title:
Inch by Inch
Source:
http://illuminations.nctm.org/LessonDetail.aspx?ID=L545
Curricular Connections
: Math
Materials
: standard ruler for each student and activity sheet, also a blown up ruler for the
board.
Grade Range
: 34
Lesson Overview
: Students will use rulers to represent various fractions as lengths.
Students will use a ruler to measure a variety of items, including items which can be
measured to the nearest half and quarter of an inch.
M/S/T Standards and Evidence
Students Will:
(3.N.10) develop an understanding of fractions as part of a whole unit and as parts of a
collection.
Evidence:
Students will be developing an understanding of how inches are a fraction of a
foot, and inches have fractional parts that make up one whole inch.
(3.N.11) use manipulatives, visual models, and illustrations to name and represent unit
fractions (1/2, 1/3, 1/4, 1/5, 1/6, and 1/10) as part of a whole or a set of objects.
Evidence:
The students will be using rulers as a visual model and their activity sheet will
have illustrations to represent fractions.
(3.N.13) recognize fractional numbers as equal parts of a whole.
Evidence
: Students will be learning fractional parts of an inch, ½ inch and a ¼ inch.
(3.N.15) compare and order unit fractions (½,
, ¼) and find their approximate locations
⅓
on a number line.
Evidence:
Students will be able to find these fractions of an inch on a ruler.
(3.M.1) select tools and units (customary) appropriate for the length measured.
Evidence:
Students will be using rulers.
(3.M.2) use a ruler/yardstick to measure to the nearest standard unit (whole and ½
inches, whole feet, and whole yards).
Evidence:
Students will be using standard 12 inch rulers to measure to the nearest whole
and half inches.
(4.N.7) develop an understanding of fractions as locations on number lines and as
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 Fall '08
 Mankus
 ruler, Inch, WHITE BOARD

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