## Ms. Amanda

### Target 1​

###### Lesson Type:

Continuation

Number Operation

:

Computation

Subtract within 1,000 (regrouping limited to only one place-value).

###### 1:

Understand why the standard algorithm for subtraction is based on place-value.

###### 2:

Understand that when subtracting a multi-digit number, each place-value is being subtracted individually to create the new number (ones are subtracted from ones, tens are subtracted from tens, etc.)

###### 3:

Understand how to regroup based on place-value understandings (i.e., ten ones can be composed into one ten – ten tens can be composed into one hundred).

###### 4:

Understand that subtraction equations can be written both vertically and horizontally.

2nd

###### Vocabulary:

Difference, Ones, Tens, Hundreds, Thousands, Change

Activities:

• Students practiced subtracting 1000s, including across zeros.
• Students practiced subtracting money.
• Students "bought" two items with a \$10 bill or a \$20 bill and solved to find the change that they would receive.
• Students set up addition problems to check their work.

### Target 2

:

###### 1:

Look at a visual spatial puzzle to analyze the pieces and determine which is the correct piece to choose.

Kindergarden

###### Vocabulary:

Tangrams, Triangles, Parallelograms, Squares

Activities:

• Students solved tangram puzzles.

:

Activities: