Ar Fractions Intro Lessons 2 1 2 2 And 2 3
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Warm Up 10-8-08 Warm Up 10-8-08
Transcript of Ar Fractions Intro Lessons 2 1 2 2 And 2 3
Warm Up 10-8-08Warm Up 10-8-08
Parts of a FractionParts of a Fraction
3
4
= the number of parts
= the total number of parts that equal a whole
Parts of a FractionParts of a Fraction
3
4
= numerator
= denominator
¾ looks like¾ looks like
1/43
4 1/4
1/4
¾ looks like¾ looks like
1/43
4 1/4
1/4
¾ looks like¾ looks like
3
4
1/4
1/4
1/4
What fraction of the balls are What fraction of the balls are purple? purple?
1
4
What fraction of the balls are What fraction of the balls are purple? purple?
1
6
What fraction of the balls are What fraction of the balls are purple? purple?
4
6
What fraction of the rectangle What fraction of the rectangle is purple? is purple?
2
6
What fraction of the pie is What fraction of the pie is purple? purple?
4
4
What fraction of the pie is What fraction of the pie is purple? purple?
3
4
What fraction of the musical What fraction of the musical instruments have strings? instruments have strings?
2
5
What fraction of the fish have What fraction of the fish have stripes? stripes?
3
5
What fraction of the arrowsWhat fraction of the arrowshit the bullseye? hit the bullseye?
1
3
What fraction of the pins areWhat fraction of the pins areknocked down? knocked down?
3
10
What are Equivalent What are Equivalent Fractions?Fractions?
Equivalent fractions are Equivalent fractions are Fractions that have the Fractions that have the same same valuevalue..
What do I mean? Let see …What do I mean? Let see …
A ProblemA Problem
Marcus and Leonard bought a Marcus and Leonard bought a pizza. They wanted to share pizza. They wanted to share the pizza. How should we cut the pizza. How should we cut it so that they have an equal it so that they have an equal share?share?
Problem Solved!Problem Solved!
12
12
MarcusMarcus LeonardLeonard
Another ProblemAnother Problem
When Marcus was about to When Marcus was about to cut the pizza, Michelle and cut the pizza, Michelle and LingLi came along. They LingLi came along. They wanted to have a piece of the wanted to have a piece of the pizza too? How should Marcus pizza too? How should Marcus cut the pizza?cut the pizza?
Problem Solved again!Problem Solved again!
14
14
MarcusMarcus
LeonardLeonard14
14
MichelleMichelle
LingLiLingLi
Let’s Look at the Pizza!Let’s Look at the Pizza!
12
41
41
+42
12 =
24
This is Equivalent Fractions!
Other Equivalent Other Equivalent Fractions!Fractions!
12
24
= 36
=
More Equivalent Fractions!More Equivalent Fractions!
510
12
= 48
=
How to form Equivalent How to form Equivalent Fractions?Fractions?
12
48
510= =
X 4
X 4
X 5
X 5
Equivalent Fraction ModelsEquivalent Fraction Models
12
48
=
Equivalent Fraction ModelsEquivalent Fraction Models
34
68
=
Equivalent Fraction ModelsEquivalent Fraction Models
23
46
=
What are the missing What are the missing numbers?numbers?
12
24
36
= =
What are the missing What are the missing numbers?numbers?
12
48
510
= =
What are the missing What are the missing numbers?numbers?
12
48
=
What are the missing What are the missing numbers?numbers?
34
68
=
What are the missing What are the missing numbers?numbers?
23
46
=
