Standard
2.OA.4 Use addition to find the total number of objects arranged in rectangular
arrays with up to 5 rows and up to 5 columns; write an equation to express the total
as a sum of equal addends.
Task
Provide materials to the student. Read the problem to the student: How many object are in the
array? Write an equation with equal addends to express the total.
Teacher notes:
An array is any arrangement of things in rows and columns, such as a rectangle or square tiles or
blocks. Students need to see the that you can write an addition equation to show the
representation of the model
Students who demonstrate mastery use addition to find the total number of objects in an array,
and they can write an addition equation (e.g., 3 + 3 + 3 = 9) to express the total as a sum of equal
addends. For this task they can write 5 + 5 + 5 for the first item or 3 + 3 + 3 + 3 + 3. For the
second item students can write 6 + 6 or 2 + 2 + 2 + 2 + 2 + 2.
Students who demonstrate partial mastery may write an addition sentence, but it may not be
repeated addition. For example, for the first item they may write 10 + 5.
2.OA.3 Use
addition to find the
total number of
objects arranged in
rectangular arrays
with up to 5 rows
and up to 5
columns; write an
equation to express
the total as a sum
of equal addends.
L
Limited Progress
toward Grade
Level Standard
Is unable to use
addition to find
the total number
of objects
arranged in
rectangular arrays
with up to 5 rows
and up to 5
columns.
P
Progressing
toward Grade
Level Standard
Inconsistently
uses addition to
find the total
number of objects
arranged in
rectangular arrays
with up to 5 rows
and up to 5
columns.
M
Meets Grade Level
Standard
Consistently uses
addition to find
the total number
of objects
arranged in
rectangular arrays
with up to 5 rows
and up to 5
columns.
E
Exceeds
Grade Level
Standard
Consistently
uses
addition to
find the
total
number of
objects
arranged in
rectangular
arrays with
up to 5
rows and
up to 5
columns;
write an
equation to
express the
total as a
sum of
equal
addends.
Name
2.OA.4
Write a repeated addition equation that shows the total number of chairs
and bicycles.
Name
2.OA.4
Write a repeated addition equation that shows the total number of chairs and
bicycles
.