1. - = + = Words about numbers
Building Background
Numbers big and small
Words about numbers
There are 5 cookies. Follow the directions.
1. If you have five cookies and eat 2 cookies,
how many cookies are left?
2. And then if your mom gives you 10 cookies,
how many cookies do you have? - = + =
Now think about the signs shown in the questions above.
Circle the words that are related with signs in direction 1.
minus plus add subtract
Circle the words that are related with the signs in direction 2.
minus plus add subtract
What else can we do with numbers?
There is a pencil and a ruler. Think and circle.
1. The pencil is shorter than the ruler.
2. The pencil is 3 centimeters.
estimate measure 1 2 3 4
estimate measure
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2. cubes digit equal fruit
Numbers big and small
cubes
digit
equal
fruit
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3. rods signs cubes digit Numbers big and small cube[kyoob]
Noun, plural cubes.
A cube is a solid object like a block, with six equal square sides.
[dij-t]
Noun, plural digits.
Mathematics.
any of the numerals from 1 to 9 and usually the numeral 0.
rods
signs
cubes
digit
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4. equal fruit rods signs Numbers big and small [ee-kwul] adjective.
having the same quantity, size, or measurement as another.
[froot]
Noun. plural fruits.
the part of a plant or tree that contains the seeds and can be eaten such as oranges, apples, or cherries.
rod[rod]
Noun, plural rods.
a straight cylinder of wood, metal, or plastic.
sign[sine]
Plural noun signs.
a mark or symbol that stands for something else.
equal
fruit
rods
signs
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5. Grammar Comparatives (비교) Practice 1 Practice 2 (JIR p15)
Numbers big and small
Grammar
Comparatives (비교)
The ending er and est are used to compare things.
JIR : Numbers big and small
Evan Moor, Grammar & Punctuation 2 (rule 25)
Practice 1
Practice 2 (JIR p15)
Use er to compare two things.
The tree is taller than the swing.
The soccer ball is bigger than the baseball.
Twenty is less than forty-five.
Five is greater than three.
Which number is less than the other number?
Use est to compare three or more things.
She is the thinnest of the four girls.
Brandon is the tallest boy in the class.
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6. cubes digit equal fruit rods signs
Vocabulary
Numbers big and small
cubes digit equal
fruit rods signs
Fill in the blanks.
2 plus 3 is ________________ to 5.
The number 1 has only one _______________ .
You can use ___________ and ____________ to compare numbers.
You can use more ______________ to compare numbers.
The ____________ is very fresh and tastes good.
Complete the crossword puzzle.
Across
1. a number used for counting, such as 0 to 9
2. small shapes with rectangular sides that stand for 1
Down
3. for example, oranges, apples, or cherries
4. of the same amount
5. long shapes with rectangular sides that stand for 10
6. marks used to stand for a letter, number, or idea 5 6 3 1 2 4
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7. Which number is greater?
Before Writing
Numbers big and small
Which number is greater?
Long hair
Short hair
Boys Girls
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8. Title : 18 is greater than 15 . So, we have more boys than girls . . .
Writing
Numbers big and small
Title : 15 18
is greater than
So, we have more boys than girls . . .
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