Exploring Equal Groups and Arrays

In this video tutorial, second-grade students learn how to use equal groups to build arrays. The teacher explains the concept of equal groups and demonstrates how to arrange them into rows to form arrays. Two examples are provided: one with three groups of four and another with five groups of two. The video emphasizes the importance of skip counting as a strategy to find totals in arrays and encourages students to practice these skills using educational platforms like I-Ready or ST Math.

What does having equal groups help us build in mathematics?

• Squares

• Circles

• Triangles

• Arrays

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CCSS.2.OA.C.4

If we have three equal groups of four, how many rows will we create?

• Five

• Two

• Three

• Four

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CCSS.3.OA.A.3

How many objects are in each row if we have three equal groups of four?

• Two

• Four

• Three

• Twelve

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CCSS.2.OA.C.3

What direction do rows extend in an array?

• Diagonally

• Vertically

• In a circle

• Horizontally

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CCSS.3.OA.A.1

How many objects are there in total if we have three equal groups of four?

• Seven

• Nine

• Twelve

• Fifteen

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CCSS.2.OA.C.3

When we have five equal groups of two, how many rows do we have?

• Two

• Five

• Three

• Ten

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CCSS.2.OA.C.4

How many objects are in each row if we have five equal groups of two?

• Two

• One

• Four

• Five

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CCSS.2.OA.C.3

What is the total number of objects when we have five equal groups of two?

• Ten

• Five

• Fifteen

• Twenty

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CCSS.2.OA.C.4

Which skill is emphasized as helpful for finding totals in arrays?

• Addition

• Multiplication

• Skip counting

• Subtraction

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CCSS.3.OA.A.1

What online platforms are suggested for practicing skip counting skills?

• I ready or ST Math

• Khan Academy or Coursera

• YouTube or Vimeo

• Google Classroom or Zoom

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CCSS.1.NBT.A.1