Operations
and Algebraic Thinking (1.OA) 
Represent
and solve problems involving addition and subtraction.

1.OA.1

Use
addition and subtraction within 20 to solve word problems involving
situations of adding to, taking from, putting together, taking apart,
and comparing, with unknowns in all positions, e.g., by using objects,
drawings, and equations with a symbol for the unknown number to represent
the problem. 


Solve
word problems that call for addition of three whole numbers whose
sum is less than or equal to 20, e.g., by using objects, drawings,
and equations with a symbol for the unknown number to represent the
problem. 

Understand
and apply properties of operations and the relationship between
addition and subtraction. 

Apply
properties of operations as strategies to add and subtract. Examples:
If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative
property of addition.) To add 2 + 6 + 4, the second two numbers can
be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property
of addition.) 
+,
 Fact Families
(EZ School)
Teacher
Dodgeball 
1.OA.4

Understand
subtraction as an unknownaddend problem. For example,
subtract 10 – 8 by finding the number that makes 10 when added
to 8. 
Write
Fact Family Sentences (EZ School) 
Add
and subtract within 20. 

Relate
counting to addition and subtraction (e.g., by counting on 2 to add
2). 
Bugabaloo
Adding (Sheppard)
Subtraction
Harvest (Sheppard)
Two
Less Than (bgfl.org)
Two
More Than (bgfl.org) 
1.OA.6

Add
and subtract within 20, demonstrating fluency for addition and
subtraction within 10. Use strategies such as counting on; making
ten
(e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading
to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 –
1 = 9); using the relationship between addition and subtraction (e.g.,
knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating
equivalent but easier or known sums (e.g., adding 6 + 7 by creating
the known equivalent 6 + 6 + 1 = 12 + 1 = 13). 
Create
Fact Families (sadlieroxford)
Fill
in Fact Families (sadlieroxford)
Sum
Triangle (sadlieroxford)

Work
with addition and subtraction equations. 

Understand
the meaning of the equal sign, and determine if equations involving
addition and subtraction are true or false. For example, which of
the following equations are true and which are false? 6 = 6, 7 = 8
– 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2. 

1.OA.8

Determine
the unknown whole number in an addition or subtraction equation
relating three whole numbers. For example, determine the unknown
number that makes the equation true in each of the equations 8
+ ? = 11, 5 = ? – 3, 6 + 6 = ?.

Missing
Values (+)
Missing
Values ()
Little
Animals Activity (+,) 
Number
and Operations in Base Ten (1.NBT) 
Extend
the counting sequence. 

Count
to 120, starting at any number less than 120. In this range, read
and write numerals and represent a number of objects with a written
numeral. 


1.NBT.2

Understand
that the two digits of a twodigit number represent amounts
of tens and ones. Understand the following as special cases:

The
Shark Pool (ictgames.com)
Partition
Numbers (ictgames.com) 
1.NBT.2a 
10
can be thought of as a bundle of ten ones — called a “ten.”

Dino
Place Value
Give
the Dog a Bone
Learning
Box Activity

1.NBT.2b

The
numbers from 11 to 19 are composed of a ten and one, two, three, four,
five, six, seven, eight, or nine ones. 
Matching
Numbers and Blocks (sadlieroxford)
Base
Ten Block Matching
(ict games) 

The
numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three,
four, five, six, seven, eight, or nine tens (and 0 ones). 

1.NBT.3

Compare
two twodigit numbers based on meanings of the tens and ones
digits, recording the results of comparisons with the symbols >,
=, and <. 
thatquiz.com
(>,<,=) 
Use
place value understanding and properties of operations to add &
subtract. 

Add
within 100, including adding a twodigit number and a onedigit
number, and adding a twodigit number and a multiple of 10, using
concrete models or drawings and strategies based on place value,
properties of
operations, and/or the relationship between addition and subtraction;
relate the strategy to a written method and explain the reasoning
used.
Understand that in adding twodigit numbers, one adds tens and tens,
ones
and ones; and sometimes it is necessary to compose a ten. 


Given
a twodigit number, mentally find 10 more or 10 less than the number,
without having to count; explain the reasoning used. 
100
Hunt (for +10)
100
Hunt (for +10)
10
Less Shoot Out (ict)
Octopus
Game [+10] (ictgames.com)
Behind
the Blob


Subtract
multiples of 10 in the range 1090 from multiples of 10 in the range
1090 (positive or zero differences), using concrete models or drawings
and strategies based on place value, properties of operations, and/or
the relationship between addition and subtraction; relate the strategy
to a written method and explain the reasoning used. 

Measurement
and Data (1.MD) 
Measure
lengths indirectly and by iterating length units. 

Order
three objects by length; compare the lengths of two objects indirectly
by using a third object.



Express
the length of an object as a whole number of length units, by laying
multiple copies of a shorter object (the length unit) end to end;
understand that the length measurement of an object is the number
of samesize length units that span it with no gaps or overlaps.
Limit to contexts where the object being measured is spanned by
a whole number of length units with no gaps or overlaps. 
Measure
with Curious George 


Tell
and write time in hours and halfhours using analog and digital
clocks. 
Willie
the Watchdog
Stop
the Clock
What
Time is It?
On
Time! Analog (Sheppard)
Clock
ShootLevel 2 (Sheppard)
Read
Clocks 
Represent
and interpret data. 
1.MD.4 
Organize,
represent, and interpret data with up to three categories; ask and
answer questions about the total number of data points, how many
in each category, and how many more or less are in one category
than in another. 
Interpret
Various Data Graphs
SoftSchools.com
Pictographs
Starfish
Theater (Interpret Pictographs) 

Reason
with shapes and their attributes. 
1.G.1 
Distinguish
between defining attributes (e.g., triangles are closed and threesided)
versus nondefining attributes (e.g., color, orientation, overall
size); build and draw shapes to possess defining attributes. 
Sort
by Color,Shape,Size
Shape
Sorter 
1.G.2

Compose
twodimensional shapes (rectangles, squares, trapezoids, triangles,
halfcircles, and quartercircles) or threedimensional shapes (cubes,
right rectangular prisms, right circular cones, and right circular
cylinders) to create a composite shape, and compose new shapes from
the composite shape. 
Play
Triangle Alley
NCTM
Patch Tool 

Partition
circles and rectangles into two and four equal shares, describe the
shares using the words halves, fourths, and quarters, and use the
phrases half of, fourth of, and quarter of. Describe the whole as
two of, or four of the shares. Understand for these examples that
decomposing into more equal shares creates smaller shares. 
Fraction
Flags (halves)
Fraction
Flags (thirds) 