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Arrays and Equal Groups (2.OA.4)

• ​Repeated Addition

• Rows and Columns

• Extended Learning (Multiplication)​

Tips

• Rows before Columns when you write an equation to match the array

• Each group or row has an equal amount

• Check your product/answer using repeated addition.

• Commutative Property: If the two factors are reversed, you still get the same product. 2 x 3 = 3 x 2

Remember...

• Columns are vertical or up-and-down

Remember...

• Rows are horizontal or side-to-side

Multiple Choice

True or false arrays have to be equally grouped

• true

• false

Example of Array Model

How can I represent this array as a multiplication equation?

Remember: Rows x Columns

Multiple Choice

How can I represent this array model as a multiplication equation?

• 6 + 6 = 12

• 3 x 4 = 12

• 6 + 3 = 9

• 6 x 2 = 12

Multiple Choice

Aaron says that he arranged his star collection with 4 rows and 3 stars on each row . Which array model fits the description?

Multiple Choice

What is the repeated addition sentence for this array?

• 4 + 4 + 4 + 4 + 4

• 5 + 5 + 5 + 5

• 4 + 4 + 4 + 4

• 5 + 5 + 5 + 5 + 5

Multiple Choice

What is the repeated addition sentence for this array?

• 3 + 3 + 3

• 3 + 3

• 3 x 3

Multiple Choice

Which number sentence represents this array correctly?

• 4 x 5 = 20

• 5 x 6 = 30

Multiple Select

What is the Multiplication equation for this array, choose all that apply.

• 4 x 3

• 3 x 5

• 3 x 4

• 3 x 3

Place Value Lesson (2.NBT. 1)

​By: Brittani Stewart (2nd grade)

There are many ways to show a number.

Some text here about the topic of discussion

R

Writing the number using words

​

Example: two hundred twenty-four​

​

​Word Form:

R

The Regular Way: just the number

​

Example: 224​

​Standard Form:

R

​Showing the number using a chart for hundreds, tens and ones​

​Example: see anchor chart​

​Place Value Chart

R

​Showing the number using base ten blocks.

​

Example: see anchor chart​

​Base Ten Form

There are Many Ways to Show a Number.

Some text here about the topic of discussion

Multiple Choice

What is the digit value of 5?

254

• 5

• 50

• 500

Multiple Choice

What number shows 5 tens and 0 ones?

Multiple Choice

What is the value of the red digit?

92

• 90

• 2

• 900

• 200

Multiple Choice

What is the place value of the underlined digit?

• ones

• tens

• hundreds

Multiple Choice

What number shows 5 tens and 0 ones?

Multiple Choice

40 + 2 is expanded form for which number? 

• 42
• 72
• 402
• 96

Multiple Choice

6 tens and 9 ones is expanded form for which number? 

• 96
• 69 
• 45 
• 609 

Multiple Choice

What is 500+10+7 in standard form?

• 517
• 13
• 500107

Multiple Choice

What is the value of the red digit?

92

• 90

• 2

• 900

• 200

Multiple Choice

Which number has the value of 63?

Two-digit Addition Lesson

by

Adding Key Words

• Plus

• Total

• Altogether

• Sum

• Combined

• Increase

• More( sometimes)

Double Digit Addition

Multiple Choice

63+25=

• 88
• 98
• 97
• 89

Multiple Choice

27 + 45 =

• 77

• 70

• 72

• 62

Multiple Choice

Do I need to regroup in this addition problem?

• yes

• no

Multiple Choice

Do I need to regroup in this addition problem?

• Yes

• No

Multiple Choice

25+13

• 38
• 39
• 35
• 40

Shapes 2nd Grade

Learning Target

Identify 2D shapes and their attributes

Basic Shapes

• Triangle

• Rectangle

• Square

• Circle

Multiple Choice

What is the name of this shape?

• circle

• triangle

• rectangle

• square

Multiple Choice

What is the name of this shape?

• Circle

• Triangle

• Rectangle

• Square

Multiple Choice

What is this

shape?

• Circle

• Triangle

• Rectangle

• Square

Multiple Choice

What is this

shape?

• Circle

• Triangle

• Rectangle

• Square

Pentagon

A Pentagon has 5 sides

Think of holding a pencil with your 5 fingers

Hexagon

A Hexagon has 6 sides

Think of the sound of the x in Hex being the same as the x in Six

What do these shapes have in common?

THEY ALL HAVE 4 SIDES!!!

QUADRILATERAL

A quadrilateral has 4 sides

quad = 4

lateral = side

Prefix Hints.....

• TRI = 3 (like a TRIcycle)

• QUAD = 4 (like QUADruplets)

• PENT = 5 (think of a pen in your 5 fingers)

• HEX = 6 (think of the sound of x in hex and six)

Open Ended

How many sides does a triangle have ?

Open Ended

How many sides does a quadrilateral have ?

Open Ended

How many sides does a pentagon have ?

Open Ended

How many sides does a hexagon have ?

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