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# Iowa Core Standards First Grade Mathematics resources

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Geometry

Reason with shapes and their attributes.

1.G.3. 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. (1.G.3.) (DOK 1,2)

Flip Charts Fractions

Flip Charts Math Grade 1

Flip Charts Math Grade 2

Flip Charts Understanding Fractions

Flip Charts Understanding Fractions

Quiz, Flash Cards, Worksheet, Game & Study Guide Fractions

Quiz, Flash Cards, Worksheet, Game & Study Guide Fractions

Quiz, Flash Cards, Worksheet, Game & Study Guide Fractions Greater Than or Less Than 1/2

Measurement and Data

Tell and write time.

1.MD.3. Tell and write time in hours and half-hours using analog and digital clocks. (1.MD.3.) (DOK 1)

Flip Charts All About Time

Flip Charts Hour/Half Hour

Flip Charts Hour/Half Hour

Flip Charts Math Grade 1

Flip Charts Math Grade 2

Flip Charts Telling Time

Flip Charts Time

Flip Charts Time, Money & Measurement Math Readiness

Flip Charts What time of day?

Flip Charts What time of day?

Quiz, Flash Cards, Worksheet, Game & Study Guide Telling Time

Quiz, Flash Cards, Worksheet, Game & Study Guide Time

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. (1.MD.4.) (DOK 2,3)

Flip Charts Data & Graphs

Flip Charts Math Grade 2

Quiz, Flash Cards, Worksheet, Game & Study Guide Graphs

Measure lengths indirectly and by iterating length units.

1.MD.1. Order three objects by length; compare the lengths of two objects indirectly by using a third object. (1.MD.1.) (DOK 2,3)

Flip Charts Full & Empty

Flip Charts Long & Short

Flip Charts Positions & Opposites Math Readiness

Quiz, Flash Cards, Worksheet, Game & Study Guide Comparing Objects

Number and Operations in Base Ten

Use place value understanding and properties of operations to add and subtract.

1.NBT.4. Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit 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 two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten. (1.NBT.4.) (DOK 1,2,3)

Flip Charts Adding Two-digit Numbers

Flip Charts Adding Two-digit Numbers

Flip Charts Addition

Flip Charts Addition Facts

Flip Charts Columns Across

Flip Charts Count and Write 1-10

Flip Charts Counting 1-100

Flip Charts Counting 1-100

Flip Charts Equal

Flip Charts Function Machine

Flip Charts Magic Squares

Flip Charts Math Grade 1

Flip Charts Math Grade 2

Flip Charts More or Less

Flip Charts Number 1

Flip Charts Number 10

Flip Charts Number 2

Flip Charts Number 3

Flip Charts Number 4

Flip Charts Number 5

Flip Charts Number 6

Flip Charts Number 7

Flip Charts Number 8

Flip Charts Number 9

Flip Charts Number Order

Flip Charts Number Order

Flip Charts Number Sense & Operations Math Readiness

Flip Charts Numbers 1-10 Math Readiness - SPANISH EDITION

Flip Charts One-to-One

Flip Charts Recognizing Numbers 1-10

Flip Charts Step It Up

Flip Charts Subtracting Two-digit Numbers

Flip Charts Subtracting Two-digit Numbers

Flip Charts Subtraction

Flip Charts Subtraction

Flip Charts Subtraction Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Addition Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Addition Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Commutative Property

Quiz, Flash Cards, Worksheet, Game & Study Guide Double Digit Addition without Regrouping

Quiz, Flash Cards, Worksheet, Game & Study Guide One Less, One More

Quiz, Flash Cards, Worksheet, Game & Study Guide One More, One Less

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems

Quiz, Flash Cards, Worksheet, Game & Study Guide Subtraction Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Subtraction Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Subtraction is not Commutative

Quiz, Flash Cards, Worksheet, Game & Study Guide Using Number Line

1.NBT.5. Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used. (1.NBT.5.) (DOK 2,3)

Flip Charts Circle Around

Flip Charts Counting 1-100

Flip Charts Number Order

Quiz, Flash Cards, Worksheet, Game & Study Guide Skip Counting

Quiz, Flash Cards, Worksheet, Game & Study Guide Skip Counting

Understand place value.

1.NBT.2. Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:

1.NBT.2.a. 10 can be thought of as a bundle of ten ones — called a "ten." (1.NBT.2.) (DOK 2)

Flip Charts Adding Two-digit Numbers

Flip Charts Adding Two-digit Numbers

Flip Charts Math Grade 2

Flip Charts Place Value

Quiz, Flash Cards, Worksheet, Game & Study Guide Place Value

Quiz, Flash Cards, Worksheet, Game & Study Guide Place Value

1.NBT.2.b. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones. (1.NBT.2.) (DOK 2)

Flip Charts Adding Two-digit Numbers

Flip Charts Adding Two-digit Numbers

Flip Charts Math Grade 2

Flip Charts Place Value

Quiz, Flash Cards, Worksheet, Game & Study Guide Place Value

Quiz, Flash Cards, Worksheet, Game & Study Guide Place Value

1.NBT.2.c. 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.2.) (DOK 2)

Flip Charts Adding Two-digit Numbers

Flip Charts Adding Two-digit Numbers

Flip Charts Math Grade 2

Flip Charts Place Value

Quiz, Flash Cards, Worksheet, Game & Study Guide Place Value

Quiz, Flash Cards, Worksheet, Game & Study Guide Place Value

1.NBT.3. Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <. (1.NBT.3.) (DOK 2)

Flip Charts Addition

Flip Charts Circle Around

Flip Charts Count and Write 1-10

Flip Charts Counting 1-100

Flip Charts Math Grade 2

Flip Charts Number 1

Flip Charts Number 10

Flip Charts Number 2

Flip Charts Number 3

Flip Charts Number 4

Flip Charts Number 5

Flip Charts Number 6

Flip Charts Number 7

Flip Charts Number 8

Flip Charts Number 9

Flip Charts Number Order

Flip Charts Numbers 1-10 Math Readiness - SPANISH EDITION

Flip Charts Place Value

Flip Charts Recognizing Numbers 1-10

Quiz, Flash Cards, Worksheet, Game & Study Guide Comparing Numbers

Quiz, Flash Cards, Worksheet, Game & Study Guide Counting to 999

Quiz, Flash Cards, Worksheet, Game & Study Guide Greater Than, Less Than

Quiz, Flash Cards, Worksheet, Game & Study Guide Ordering Numbers and Objects by Size

Quiz, Flash Cards, Worksheet, Game & Study Guide Sequencing

Quiz, Flash Cards, Worksheet, Game & Study Guide Sequencing

Quiz, Flash Cards, Worksheet, Game & Study Guide Using Number Line

Extend the counting sequence.

1.NBT.1. 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.1.) (DOK 1,2)

Flip Charts Addition

Flip Charts Circle Around

Flip Charts Columns Across

Flip Charts Count and Write 1-10

Flip Charts Counting 1-100

Flip Charts Equal

Flip Charts Function Machine

Flip Charts Hundred Counting Chart

Flip Charts Magic Squares

Flip Charts Math Grade 2

Flip Charts More or Less

Flip Charts Number 1

Flip Charts Number 10

Flip Charts Number 2

Flip Charts Number 3

Flip Charts Number 4

Flip Charts Number 5

Flip Charts Number 6

Flip Charts Number 7

Flip Charts Number 8

Flip Charts Number 9

Flip Charts Number Order

Flip Charts Number Order

Flip Charts Number Sense & Operations Math Readiness

Flip Charts Numbers 1-10 Math Readiness - SPANISH EDITION

Flip Charts One-to-One

Flip Charts Place Value

Flip Charts Recognizing Numbers 1-10

Flip Charts Step It Up

Flip Charts Subtraction

Quiz, Flash Cards, Worksheet, Game & Study Guide Comparing Numbers

Quiz, Flash Cards, Worksheet, Game & Study Guide Counting to 999

Quiz, Flash Cards, Worksheet, Game & Study Guide Double Digit Addition without Regrouping

Quiz, Flash Cards, Worksheet, Game & Study Guide Number Words

Quiz, Flash Cards, Worksheet, Game & Study Guide Odd and Even

Quiz, Flash Cards, Worksheet, Game & Study Guide Odd and Even

Quiz, Flash Cards, Worksheet, Game & Study Guide One Less, One More

Quiz, Flash Cards, Worksheet, Game & Study Guide One More, One Less

Quiz, Flash Cards, Worksheet, Game & Study Guide Sequencing

Quiz, Flash Cards, Worksheet, Game & Study Guide Sequencing

Quiz, Flash Cards, Worksheet, Game & Study Guide Using Number Line

Operations and Algebraic Thinking

Work with addition and subtraction equations.

1.OA.7. quations 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.7.) (DOK 3)

Flip Charts Addition

Flip Charts Circle

Flip Charts Circle

Flip Charts Cone

Flip Charts Cone

Flip Charts Cube

Flip Charts Cube

Flip Charts Cylinder

Flip Charts Cylinder

Flip Charts Dot to Dot

Flip Charts Exploring Shapes Math Readiness - SPANISH

Flip Charts Number Order

Flip Charts Number Sense & Operations Math Readiness

Flip Charts Oval

Flip Charts Oval

Flip Charts Rectangle

Flip Charts Rectangle

Flip Charts Rhombus

Flip Charts Rhombus

Flip Charts Sphere

Flip Charts Sphere

Flip Charts Square

Flip Charts Square

Flip Charts Triangle

Flip Charts Triangle

Quiz, Flash Cards, Worksheet, Game & Study Guide Symmetry

Add and subtract within 20.

1.OA.5. Relate counting to addition and subtraction (e.g., by counting on 2 to add 2). (1.OA.5.) (DOK 1,2)

Flip Charts Adding Two-digit Numbers

Flip Charts Adding Two-digit Numbers

Flip Charts Addition Facts

Flip Charts Columns Across

Flip Charts Count and Write 1-10

Flip Charts Counting 1-100

Flip Charts Counting 1-100

Flip Charts Equal

Flip Charts Function Machine

Flip Charts Magic Squares

Flip Charts Math Grade 1

Flip Charts Math Grade 2

Flip Charts More or Less

Flip Charts Number 1

Flip Charts Number 10

Flip Charts Number 2

Flip Charts Number 3

Flip Charts Number 4

Flip Charts Number 5

Flip Charts Number 6

Flip Charts Number 7

Flip Charts Number 8

Flip Charts Number 9

Flip Charts Number Order

Flip Charts Number Order

Flip Charts Number Sense & Operations Math Readiness

Flip Charts Numbers 1-10 Math Readiness - SPANISH EDITION

Flip Charts One-to-One

Flip Charts Recognizing Numbers 1-10

Flip Charts Subtracting Two-digit Numbers

Flip Charts Subtracting Two-digit Numbers

Flip Charts Subtraction

Flip Charts Subtraction

Flip Charts Subtraction Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Addition Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Addition Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Commutative Property

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems

Quiz, Flash Cards, Worksheet, Game & Study Guide Subtraction Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Subtraction Facts

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). (1.OA.6.) (DOK 1,2)

Flip Charts Adding Two-digit Numbers

Flip Charts Adding Two-digit Numbers

Flip Charts Addition

Flip Charts Addition Facts

Flip Charts Columns Across

Flip Charts Count and Write 1-10

Flip Charts Counting 1-100

Flip Charts Counting 1-100

Flip Charts Equal

Flip Charts Function Machine

Flip Charts Magic Squares

Flip Charts Math Grade 1

Flip Charts Math Grade 2

Flip Charts More or Less

Flip Charts Number 1

Flip Charts Number 10

Flip Charts Number 2

Flip Charts Number 3

Flip Charts Number 4

Flip Charts Number 5

Flip Charts Number 6

Flip Charts Number 7

Flip Charts Number 8

Flip Charts Number 9

Flip Charts Number Order

Flip Charts Number Order

Flip Charts Number Sense & Operations Math Readiness

Flip Charts Numbers 1-10 Math Readiness - SPANISH EDITION

Flip Charts One-to-One

Flip Charts Recognizing Numbers 1-10

Flip Charts Step It Up

Flip Charts Subtracting Two-digit Numbers

Flip Charts Subtracting Two-digit Numbers

Flip Charts Subtraction

Flip Charts Subtraction

Flip Charts Subtraction Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Addition Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Addition Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Commutative Property

Quiz, Flash Cards, Worksheet, Game & Study Guide Double Digit Addition without Regrouping

Quiz, Flash Cards, Worksheet, Game & Study Guide One Less, One More

Quiz, Flash Cards, Worksheet, Game & Study Guide One More, One Less

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems

Quiz, Flash Cards, Worksheet, Game & Study Guide Subtraction Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Subtraction Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Subtraction is not Commutative

Quiz, Flash Cards, Worksheet, Game & Study Guide Using Number Line

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

1.OA.3. 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.) (1.OA.3.) (DOK 2)

Quiz, Flash Cards, Worksheet, Game & Study Guide Commutative Property

1.OA.4. Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8. (1.OA.4.) (DOK 2)

Flip Charts Adding Two-digit Numbers

Flip Charts Adding Two-digit Numbers

Flip Charts Addition

Flip Charts Addition Facts

Flip Charts Columns Across

Flip Charts Count and Write 1-10

Flip Charts Counting 1-100

Flip Charts Counting 1-100

Flip Charts Equal

Flip Charts Function Machine

Flip Charts Magic Squares

Flip Charts Math Grade 1

Flip Charts Math Grade 2

Flip Charts More or Less

Flip Charts Number 1

Flip Charts Number 10

Flip Charts Number 2

Flip Charts Number 3

Flip Charts Number 4

Flip Charts Number 5

Flip Charts Number 6

Flip Charts Number 7

Flip Charts Number 8

Flip Charts Number 9

Flip Charts Number Order

Flip Charts Number Order

Flip Charts Number Sense & Operations Math Readiness

Flip Charts Numbers 1-10 Math Readiness - SPANISH EDITION

Flip Charts One-to-One

Flip Charts Recognizing Numbers 1-10

Flip Charts Step It Up

Flip Charts Subtracting Two-digit Numbers

Flip Charts Subtracting Two-digit Numbers

Flip Charts Subtraction

Flip Charts Subtraction

Flip Charts Subtraction Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Addition Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Addition Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Commutative Property

Quiz, Flash Cards, Worksheet, Game & Study Guide Double Digit Addition without Regrouping

Quiz, Flash Cards, Worksheet, Game & Study Guide One Less, One More

Quiz, Flash Cards, Worksheet, Game & Study Guide One More, One Less

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems

Quiz, Flash Cards, Worksheet, Game & Study Guide Subtraction Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Subtraction Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Subtraction is not Commutative

Quiz, Flash Cards, Worksheet, Game & Study Guide Using Number Line

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. (1.OA.1.) (DOK 2)

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems