Array Adventures: Mastering Rows and Columns!

Mathematics Grades 2nd Grade 5:24 Video
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Lesson Description

Learn about arrays, which are arrangements of objects in rows and columns. This lesson will help you identify and create arrays, and understand how they relate to counting and multiplication!

Video Resource

Arrays for Kids | Math for 2nd Grade | Kids Academy

Kids Academy

Duration: 5:24
Watch on YouTube

Key Concepts

  • Arrays are arrangements of objects in rows and columns.
  • Rectangular arrays have equal numbers of objects in each row and each column.
  • Arrays make counting easier and prepare us for multiplication.

Learning Objectives

  • Students will be able to define an array.
  • Students will be able to identify examples of rectangular arrays.
  • Students will be able to create their own rectangular arrays using manipulatives or drawings.

Educator Instructions

  • Introduction (5 mins)
    Begin by asking students if they've ever arranged things in a neat way, like toys or snacks. Introduce the word 'array' and explain that it's a special way of arranging things in rows and columns.
  • Video Viewing (7 mins)
    Play the YouTube video 'Arrays for Kids | Math for 2nd Grade | Kids Academy'. Encourage students to pay attention to what makes a shape an array.
  • Discuss Arrays (5 mins)
    After watching the video, discuss what an array is. Emphasize the importance of having equal rows and columns. Use examples from the video (cats, houses, snails, beach balls) to reinforce the concept. Show some examples of non-arrays (circular stars, smiley faces with unequal rows).
  • Array Creation (10 mins)
    Give each student a set of manipulatives (e.g., counters, blocks, small toys). Have them create their own rectangular arrays. For example: 'Make an array with 2 rows and 4 columns.' 'Make an array with 3 rows and 3 columns.' Encourage them to draw their arrays on paper as well.
  • Worksheet Activity (8 mins)
    Distribute a worksheet with various pictures. Ask students to identify which pictures show rectangular arrays and explain why. Use similar images from the video.
  • Wrap up (5 mins)
    Recap what you learned about arrays and how to create them. How will this help them in the future.

Interactive Exercises

  • Manipulative Arrays
    Students use counters, blocks, or other manipulatives to create different arrays based on verbal instructions (e.g., 'Make an array with 3 rows and 5 columns').
  • Drawing Arrays
    Students draw arrays on paper, labeling the rows and columns. Provide prompts such as, 'Draw an array of stars with 4 rows and 2 columns.'

Discussion Questions

  • What is a row?
  • What is a column?
  • What makes a shape an array?
  • Can you name objects that are arrays in real life?

Skills Developed

  • Understanding spatial arrangements.
  • Visual discrimination.
  • Problem-solving.
  • Counting

Multiple Choice Questions

Question 1:

What is an array?

Correct Answer: A group of objects in rows and columns.

Question 2:

Which of these is most important when making an array?

Correct Answer: Having equal numbers in each row.

Question 3:

Which shape is an array?

Correct Answer: Square

Question 4:

If an array has 3 rows and 4 columns, how many objects are there?

Correct Answer: 12

Question 5:

Why are arrays helpful?

Correct Answer: They make counting easier.

Question 6:

Which one is an array?

Correct Answer: Tiles on the floor in rows and columns.

Question 7:

What do we call the up and down line in an array?

Correct Answer: Columns

Question 8:

What do we call the side to side line in an array?

Correct Answer: Rows

Question 9:

Teacher Mike used a picture of what animal to describe an array?

Correct Answer: Cat

Question 10:

The house and the beach balls are examples of shapes used in an?

Correct Answer: Array

Fill in the Blank Questions

Question 1:

An array has equal numbers in each ____ and ____.

Correct Answer: row, column

Question 2:

Arrays help us get ready for ____.

Correct Answer: multiplication

Question 3:

An array is a group of objects, pictures, and numbers arranged in ____ and ____.

Correct Answer: rows, columns

Question 4:

A rectangular array is in the shape of a ____.

Correct Answer: rectangle

Question 5:

In an array, it is important to have an ____ number in each row and column.

Correct Answer: equal

Question 6:

The teacher used cats, ____, snails, and beach balls to show different array shapes.

Correct Answer: houses

Question 7:

The opposite of row is ____

Correct Answer: column

Question 8:

____ are an easy way to count.

Correct Answer: arrays

Question 9:

Arrays are groups of objects that are ____ together.

Correct Answer: arranged

Question 10:

If you dont have the same number in each ____ and ____ then it is not an array

Correct Answer: rows, column

Educational Standards

2.N.2.6:Use concrete models and structured arrangements, such as repeated addition, arrays, and ten frames to develop an understanding of multiplication. 2.A.1.1:Represent, create, describe, complete, and extend increasing and decreasing patterns with quantity and numbers in a variety of contexts.

Teaching Materials

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