**Chapter 9**

**Measurement**

Domain: Measurement & Data

Domain: Measurement & Data

**Chapter Question**How can you measure length and tell time?

**Chapter Vocabulary****half hour**- a unit of time equal to 30 minutes

**hour**- a unit of time equal to 60 minutes

**hour hand**- the short hand on an analog clock

**longest**- a length that is greater than all others in a group

**minute**- a unit used to measure short amounts of time; in one minute the minute hand moves from one mark to the next

**minute hand**- the long hand on an analog clock

**shortest**- a length that is less than all others in a group

**Chapter 8**

**Two-Digit Addition and Subtraction**

Domain: Operations & Algebraic Thinking

Number & Operations Base Ten

**Chapter Question**How do you add and subtract two-digit numbers?

**Chapter Vocabulary**addition sentence - 17 + 20 = 37

**difference**- when you subtract one number from another number, you find the difference

**subtract**- take away

**subtraction sentence**- 50 - 30 = 20

**sum**- when you add two or more numbers (addends)

**Chapter 7**

**Compare Numbers**

Domain: Number & Operations in Base Ten

**Chapter Question**How do you use place value to compare numbers?

**Chapter Vocabulary****> -**is greater than

**< -**is less than

**is greater than**- more in quantity or amount

**is less than -**fewer in quantity or amount

**Chapter 6**

**Count & Model Numbers**

Domain: Number & Operations in Base Ten

**Chapter Question**How do you use place value to model, read, and write numbers to 120?

**Chapter Vocabulary****digit**- a symbol use in a numeration system; the ten digits used in our base-ten numeration system are 0, 1, 2 3, 4, 5, 6, 7, 8, and 9

**hundred**- a number which is equal to 10 tens or 100 ones

**ones**- the value of a digit in the ones position on a place value chart

ten - a group of ten ones

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Chapter 5

Addition & Subtraction Relationship

Chapter 5

Addition & Subtraction Relationship

Domain: Operations & Algebraic Thinking

**Chapter Question**How can relating addition and subtration help you to learn and understand facts within 20?

**Chapter Vocabulary****related facts**- addition and subtraction facts which shared the same numbers

**Chapter 4**

Subtractions Strategies

Subtractions Strategies

Domain: Operations & Algebraic Thinkings

**Chapter Essential Question**How do I solve subraction problems?

Chapter Vocabulary

count back - to count backward from a given number

**Chapter 3**

Addition Strategies

Addition Strategies

Domain: Operations & Algebraic Thinking

**Chapter Essential Question**How do I solve addition problems?

**Chapter Vocabulary****count on**- to count forward from a given number

**doubles**- addition fact that includes two of the same number, such as 5 + 5

**doubles plus one**- an addition fact with a double to add and then

one, such as 5 + 6

**doubles minus one**- add addition fact with a double to add and then subtract one, such as 5 + 4

**make a ten**- a strategy that teaches children to isolate a ten first to help them add numbers whose sum is greater than ten.

**Chapter 2**

Subtraction Concepts

Subtraction Concepts

Domain: Operations & Algebraic Thinking

**Chapter Essential Question**How can you subtract numbers from 10 or less?

**Chapter Vocabulary****compare**- to describe whether amounts or sizes are equal to, less than, or greater than each other

**difference**- the answer in a subtraction problem

**fewer**- smaller quanatity or amount

**minus**- a symbol that shows subtraction

**more**- greater quantity or amount

**subtract**- to take away objects from a group or to compare groups

**subtraction sentence**- a number sentence where one number is subtracted from another

**Chapter 1**

Addition Concepts

Addition Concepts

Domain: Operations & Algebraic Thinking

**Chapter Essential Question**How can you model adding within 10?

**Chapter Vocabulary****add**- fid the sum of two or more numbers; find how many in all

**addends**- numbers that are added to form a sum

**addition sentences**- a number sentence where one number is added to another

**is equal to (=)**- is a number or amount that is the same as

**order**- sequence or arrangement of things

**plus (+)**- added to

**sum**- a number obtained as a result of addition

**zero**- a number that when added to another number leaves the original number unchanged; a whole number that tells the number of objects in a set when none are present