Last updated: 8/16/2024

Math: 2nd Grade- Trimester 2

(1)	NY-2.OA.3a	Determine whether a group of objects (up to 20) has an odd or even number of members.
(1)	NY-2.OA.3b	Write an equation to express an even number as a sum of two equal addends.
(1)	NY-2.OA.4	Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns. Write an equation to express the total as a sum of equal addends.

- How do you know if a group is equal or unequal?

- Explain how the repeated addition sentence relates to the array

- What strategies did you use to add more efficently?

- What strategies did you use to find the total?

- Discuss if there is another way to arrange this total into equal groups.

- Discuss how these two arrays are similiar, how are they different?

- How did your rows and columns change when you re-arranged your tiles to create a new rectangle?

- Formation of equal groups

- Arrays and equal groups

- Rectangular arrays as a foundation for multiplication and division

- The Meaning of even and odd numbers

I Can:

1. Form equal groups

2. Create an array

3. Identify even and odd numbers

4. Create multiplication/division sentences by looking at an array

(1)	NY-2.G.1	Classify two-dimensional figures as polygons or non-polygons.
(1)	NY-2.G.2	Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.
(1)	NY-2.G.3	Partition circles and rectangles into two, three, or four equal shares. Describe the shares using the words halves, thirds, half of, a third of, etc. Describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.
(1)	NY-2.MD.7	Tell and write time from analog and digital clocks in five minute increments, using a.m. and p.m. Develop an understanding of common terms, such as, but not limited to, quarter past, half past, and quarter to.

What shapes can you name by knowing the number of sides and vertices?

How can you use the number of sides and angles to sort 2-dimensional shapes?

What are halves, thirds, and fourth of a whole?

How can you relate a clock to fractions?

Which attributes describe the shape?

Discuss what you notice about these shapes.

Discuss how the shape you built and the shape you drew are alike? different?

Are all squares parrellelograms? How can you prove it?

Compare the shapes and discuss your findings.

What strategies did you use to partition shapes into equal shares?

- Attributes of geometric shapes

- Composite shapes and fraction concepts

- Halves, thirds and fourths of circles and rectangles

- Application of fractions to tell time

I Can:

1. Identify attributes of a specific shape

2. Break a circle into halves, thirds and fourths

3. Break a rectangle into halves, thirds and fourths

4. Use fractions to tell time to the nearest 5 minutes