###### Hawaii

###### June 26, 2021, 8:00:00 PM

###### Saturday

###### Level 2

## Ms. Raejean

### Target 1

###### Lesson Type:

New

Algebra

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Variable

Solve addition and subtraction problems where a symbol is used to represent an unknown quantity.

###### Supporting targets:

###### 1:

Informal introduction to variables.

###### 2:

Explain that symbols can be anything: a question mark, a blank space, a color, a shape. The symbol is just an indication of what needs to be solved.

###### 3:

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###### 5:

###### Grade:

2nd

###### Vocabulary:

Variables, Unknown

Activities:

- First students reviewed adding and subtracting numbers for fluency. Students used counters as needed.
- The term "variables" or unknown numbers was introduced. A letter or question mark represents the number we don't know. We looked at what was known and unknown in the equations.
- We talked about using subtraction to help with addition equations. 10 + ? = 17, so 17 - 10 = 7. [? = 7]
- We used counters to help us find the unknown number in a subtraction equation. 22 - ? = 20. "If you have 22 counters, but want to make 20, what would you do?" "Take away 2." [? = 2]
- Students solved problems to find the unknown.

### Home Exploration

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### Target 2

###### Lesson Type:

###### New

###### Geometry

###### Coordinates

###### Use coordinates (the intersection of a row and column) to indicate the location of an object on a grid.

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###### Supporting targets:

###### 1:

Understand that in a coordinate, the first number indicates right and left (column) placement and the second up and down (row) placement.

###### 2:

Identify a row and a column.

###### 3:

Use visual tracking to accurately find the intersection point of a row and column.

###### 4:

Explain that coordinates are used so that exact same location can be found by multiple people.

###### 5:

###### Grade:

2nd

###### Vocabulary:

Coordinates, Rows, Columns

Activities:

- The concept of "coordinates" was introduced. We practiced following the row and column to find objects on a grid. We also followed the row and column to their corresponding numbers to identify the coordinates of the object.
- Students began making their own grid of objects for more practice with finding coordinates.

### Home Exploration

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### Target 3

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### Home Exploration