Tens and Ones
TEACHERS:
SUBJECT:
L. Buskirk
Number and Operations in Base Ten
STANDARD:
 K.NBT.1 Compose and decompose numbers from 11 to 19 into ten ones and some further
ones, e.g., by using objects or drawings, and record each composition or decomposition by
a drawing or equation (e.g., 18 = 10 + 8); understand that these numbers are composed of
ten ones and one, two, three, four, five, six, seven, eight, or nine ones.
OBJECTIVE (EXPLICIT):
 TSW decompose numbers from 11-20.
EVIDENCE OF MASTERY (MEASURABLE): Recording Sheets (Ten frames)
BEFORE
SUB-OBJECTIVES, SWBAT (SEQUENCED FROM BASIC TO COMPLEX):

KEY VOCABULARY:
MATERIALS: Double 10 frame worksheet
Unifix cubes
(Two sets of 10 per student)
crayons
ENGAGE (MAKE CONTENT AND LEARNING RELEVANT TO REAL LIFE AND CONNECT TO
STUDENT INTEREST)
TTW say, “Sara is putting away the glue in
a bin. Ten bottles of glue fit in a bin. There
are 12 bottles of glue on the table. If Sara
fills the first bin, how many bottles of glue
will be in the second bin?”
TTW record student responses on the white
board.
TTW say, “Today we will try to prove
whether our answers are right or wrong.
Let’s try the first problem.”
Choose two students to model as partners
with unifix cubes and ten frame work mats.
As partners, have the students count out
(orally) and snap 12 cubes together.
Students will then unsnap the cubes to fill
the first ten frame(bin) and continue by
placing the remaining cubes on the second
ten frame.
TTW say, “How many cubes are in the top
ten frame? How many are in the bottom ten
frame? Lets count to make sure we still
have 12.”
TTW say, “How many bottles of glue would
Sara have in the second bin?”
STUDENT WILL: The students will thinkpair-share and conclude how many bottles
of glue would be in the second bin.
TSW listen as teacher speaks.
Watch the two students model with unifix
cubes and the ten frames.
TSW count with teacher to verify quanity is
still 12.
TSW respond “10.”
TSW respond “2.”
TSW respond “2.”
CO-TEACHING STRATEGY IF APPLICABLE
DURING
TTW say, “Now, you are going to answer
some other problems with youir partner.
Work together to answer as many as you
can before the time is up. Are there any
questions?”
Students will work with a partner to answer
the problems on the sheets provided.
TSW work with a partner using cubes to
show how to decompose 6 different
numbers that will be given by the teacher
(14,16,8,19,11,6).
Each student will then record how they
decomposed three numbers on their sheets
by marking with crayons and an “x” to show
their thinking/problem solving. (one student
records 3 of the numbers, the partner
records the other 3 numbers)
AFTER
CO-TEACHING STRATEGY IF APPLICABLE
TTW say “What patterns/similarities did you STUDENT WILL:
discover when decomposing the numbers.” TSW determine that when it is a
“Lets remember Sara and the glue. How
“teen”number you will need to use two
many bins did she use to put away the
bins.Students should recognize the pattern
glue? Why did she need two? Look at your that every teen number is written with a
problems, When did you need two bins,
1(ten) and ends with the digit that is first
when did you need one bin?”
stated (additional ones).
CO-TEACHING STRATEGY IF APPLICABLE