6.RP.1 Ratios
TEACHER: Jennifer Mraz
SUBJECT: 6th Grade Math
STANDARD: 6.RP.1 Understand the concept of a ratio and use ratio language to describe a ratio
relationship between two quantities.
STUDENT TARGET:
Understand that ratios and proportional relationships are used to express how quantities are related
and how quantities change in relation to each other.
EVIDENCE OF MASTERY (MEASURABLE):
SUB-OBJECTIVES, SWBAT
Define the term ratio and give examples of ratios.
Write a ratio that describes a relationship between two quantities.
Explain the relationship that a ratio represents.
KEY VOCABULARY:
MATERIALS:
ratio
This lesson was adapted from Stephanie
relationship
Conklin’s lesson at the link below. To view
quantity
the lesson, you must sign up for a free
account. *the video listed in the lesson
does not play.
http://www.sharemylesson.com/ResourceD
etail.aspx?storyCode=50009345
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Whiteboard and marker
Lucky Charms Ratio Sheet (see
attached word document)
Individual bags of Lucky Charms
Cereal
Photograph to use for real world
ratios (see examples below or the
lesson as the link above).
ENGAGE (MAKE CONTENT AND LEARNING RELEVANT TO REAL LIFE AND CONNECT TO STUDENT
INTEREST)
BEFORE
Are there more marshmallows or oat pieces in a box of Lucky Charms?
TEACHER WILL:
STUDENT WILL:
Ask discussion question:
Does anybody know what a ratio is?
Discuss question with a shoulder partner
and share answers with the class.
Model the ratio of students wearing glasses
(5) to students not wearing glasses (25) by
asking students to stand up and be
counted.
Watch the teacher model the ratio and write
it on the board. Teacher will say 5 to 25.
Model the ratio of no glasses to glasses by
Watch the teacher model the ratio and write
it on the board. Teacher will say 25 to 5.
6.RP.1 Ratios
having students stand up and be counted.
Model the ratio of glasses to total number
of students in the class.
Watch the teacher model the ratio of
glasses to total number of students in the
class and write it on the board. Teacher
will say 5 to 30.
AFTER
DURING
CO-TEACHING STRATEGY IF APPLICABLE
TEACHER WILL
Model the three ways to write a ratio using
fractions, to, and the colon.
STUDENT WILL:
Write the glasses ratios in three different
ways using a whiteboard and share their
ratios with a partner.
Pass out the Lucky Charms Ratio Sheet
and bags of Lucky charms to groups of two
students. Ask students to follow the
directions on the paper to discover the
answer to the engage question “Are there
more marshmallows or oat pieces in a box
of Lucky Charms?
Complete Lucky Charms Ratio Sheet.
Compare results with the class to create a
final conclusion and answer to the question.
CO-TEACHING STRATEGY IF APPLICABLE
TEACHER WILL:
Ask students to discuss with their partner
the definition a ratio and if order matters
when writing ratios.
STUDENT WILL:
Discuss ratios and order of writing ratios
and write answer on ratio sheet.
Display a photograph on the LCD screen
and ask students to write as many
examples of ratios (in all 3 ways) as
possible.
Look a picture and write ratios using all
three methods (fraction, to, and colon).
Write ratios on sheet.
Homework: Ask students to go home and
write 5 different examples of ratios.
Make a list of ratios from examples in your
home and write them on ratio sheet.
CO-TEACHING STRATEGY IF APPLICABLE
6.RP.1 Ratios
Possible ratio pictures to show on the LCD screen.
6.RP.1 Ratios