Understanding Arrays and Multiplication

Mrs. Smith introduces a lesson on arrays and multiplication, reviewing key vocabulary and exploring the concept of multiplying by one. Students are guided through examples of arrays and their corresponding multiplication equations. The lesson emphasizes understanding the properties of multiplication, particularly the identity property of multiplying by one. Students are assigned homework to create array cards for specific products.

What materials do you need for today's lesson?

• A computer and a projector

• A bag with arrays, paper, something to write with, and scissors

• A textbook and a notebook

• A calculator and a ruler

What is the purpose of building arrays in this lesson?

• To improve drawing skills

• To understand multiplication and improve fluency with facts

• To learn about geometry

• To practice addition

What do rows in an array represent?

• Vertical lines

• Horizontal lines

• Diagonal lines

• Curved lines

How do columns in an array run?

• Left to right

• In a circle

• Up and down

• Diagonally

In the game, what direction should your arm move for 'row'?

• In a circle

• Up and down

• Left and right

• Diagonally

What are the numbers you multiply together in a multiplication equation called?

• Factors

• Sums

• Differences

• Products

What is the result of a multiplication equation called?

• Sum

• Difference

• Product

• Quotient

What does the commutative property of multiplication state?

• The order of numbers does not affect the quotient

• The order of numbers does not affect the difference

• The order of numbers does not affect the product

• The order of numbers does not affect the sum

How would you describe an array with one row of three?

• Three rows of two

• Three rows of one

• One row of three

• Two rows of three

What is the equation for an array with five rows of one?

• 5 x 5 = 25

• 5 x 1 = 5

• 1 x 1 = 1

• 1 x 5 = 5