Page 193 - NUMINO TG_3A
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12Unit Beat the Calculator!
jOb ective Understand the concept of Commutative Property of Multiplication.
1. Textbook Instructions UNIT
Have students understand that even if the 12 Beat the Calculator!
order of the factors changes, the product will
not change. Small creatures are crawling up a branch. There are 48 legs in all.
What do you see on the branches? There Ricky and Ann want to know how many small creatures there are.
are many legs of small insects.
Let’s count the number of legs one by one.
How many are there in all? There are 48
legs in all.
What kind of insect is it? The answers may
vary. For example, an ant, a spider, a
centipede, etc.
108
2. Build Understanding
The Multiplication Properties
This unit covers four properties of multiplication; Commutative Property of Multiplication, Associative Property
of Multiplication, Identity Property of Multiplication, and Zero Property of Multiplication.
Students may get confused about the names and the meanings of these terms if you try to teach them all at
once. Take this into consideration and teach one thing at a time. Make sure students have understood one
thing before moving onto the next one.
176 NUMINO Teacher s Guide
jOb ective Understand the concept of Commutative Property of Multiplication.
1. Textbook Instructions UNIT
Have students understand that even if the 12 Beat the Calculator!
order of the factors changes, the product will
not change. Small creatures are crawling up a branch. There are 48 legs in all.
What do you see on the branches? There Ricky and Ann want to know how many small creatures there are.
are many legs of small insects.
Let’s count the number of legs one by one.
How many are there in all? There are 48
legs in all.
What kind of insect is it? The answers may
vary. For example, an ant, a spider, a
centipede, etc.
108
2. Build Understanding
The Multiplication Properties
This unit covers four properties of multiplication; Commutative Property of Multiplication, Associative Property
of Multiplication, Identity Property of Multiplication, and Zero Property of Multiplication.
Students may get confused about the names and the meanings of these terms if you try to teach them all at
once. Take this into consideration and teach one thing at a time. Make sure students have understood one
thing before moving onto the next one.
176 NUMINO Teacher s Guide
