SALTA 2nd grade

Focus

Standards

Curriculum Supports – enVision 2020

Vocabulary

2.OA.3 2.OA.4

Strand: Operations and Algebraic Thinking Second grade students will work with equal groups of objects to gain foundations for multiplication. Standard 2.OA.3 Determine whether a group of objects (up to 20) has an odd or even number of members, ( for example, by pairing objects or counting them by 2s ). Write an equation to express an even number as a sum of two equal addends. Standard 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.

Topic 2: Work with Equal Groups Pick a Project: • Counting Birds • Looking at Scutes • Planning an Orchard • Flower Petals No 3-Act Math Task for this Topic 2-1 Even and Odd Numbers 2-2 Continue Even and Odd Numbers 2-3 Use Arrays to Find Totals 2-4 Make Arrays to Find Totals 2-5 Math Practices and Problem Solving: Model With Math

Topic 2:

even

• • • • •

odd

array rows

columns

Topic 2 Manipulatives: •

Connecting Cubes

Counters

•

Assessment Options: Topic 2 Assessment – Work with Equal Groups (print or online) Topic 2 Performance Assessment – Work with Equal Groups Team Created Assessment

Assessment Tasks – Topic 2 USBE 2 nd Grade Standards Assessments

Procedural Check

Application Task

2.OA.3

Add. Identify the sum as odd or even. 2 + 2 = ______ Odd Even 3 + 2 = ______ Odd Even 4 + 2 = ______ Odd Even 5 + 2 = ______ Odd Even (DOK 1)

Explain. When you add two even numbers the sum is even When you add an odd and an even number the sum is odd. Use pictures to justify your explanations. (DOK 3)

If you double a number, is it always even. Use words, pictures, and numbers to justify your answer. (DOK 3) Mrs. Watson placed cookie dough on the pan. She made 4 rows with 3 scoops of dough in each row. Draw a picture and write an equation to find the total number of cookies. (DOK 3)

2OA.4

Solve. X X X X X X X X X X X X X X X _______ + _______ + _______ = _________ (DOK 2)