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2.3 Fractions
C2 Numbers & Operations
Mr. Fintelman (FNL)
Monday October 7th
2024
1 / 32
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Wiskunde
Middelbare school
vwo
Leerjaar 1
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C2 Numbers & Operations
Mr. Fintelman (FNL)
Monday October 7th
2024
Slide 1 - Diapositive
Date
Monday October 7th 2024
Paragraph
§2.3 Fractions
Pages from the handbook
Pag. 64-67
Subject
Fractions
Adding and subtracting fractions
Today is the day...
Slide 2 - Diapositive
I can already…
… calculate the hcf and lcm.
Prior Knowledge
Slide 3 - Diapositive
Hcf and lcm
h
c
f
(
2
0
,
5
6
)
=
l
c
m
(
1
2
,
1
5
)
=
h
c
f
(
2
8
,
7
7
)
=
l
c
m
(
1
6
,
4
0
)
=
Slide 4 - Diapositive
Hcf and lcm
h
c
f
(
2
0
,
5
6
)
=
4
l
c
m
(
1
2
,
1
5
)
=
6
0
h
c
f
(
2
8
,
7
7
)
=
7
l
c
m
(
1
6
,
4
0
)
=
8
0
Slide 5 - Diapositive
After this lesson, I can…
… simplify fractions.
… turn mixed numbers into improper fractions and vice versa.
… add and subtract fractions.
Goals
Slide 6 - Diapositive
Fractions
Slide 7 - Diapositive
Simplify Fractions
9
6
=
.
.
.
3
6
1
8
=
.
.
.
1
2
5
2
5
=
.
.
.
Slide 8 - Diapositive
Simplify Fractions
9
6
=
3
2
3
6
1
8
=
2
1
1
2
5
2
5
=
5
1
Slide 9 - Diapositive
Mixed numbers and improper fractions
Slide 10 - Diapositive
Simplify Fractions
6
2
5
=
.
.
.
9
8
5
=
.
.
.
4
1
7
=
.
.
.
Slide 11 - Diapositive
Simplify Fractions
6
2
5
=
6
6
+
6
+
6
+
6
+
1
=
4
6
1
9
5
8
=
9
9
+
9
+
9
+
9
+
9
+
9
+
4
=
6
9
4
4
1
7
=
4
4
+
4
+
4
+
4
+
3
=
4
4
3
Slide 12 - Diapositive
Simplify Fractions - Quicker version
6
2
5
=
6
6
×
4
+
1
=
4
6
1
9
5
8
=
9
9
×
6
+
4
=
6
9
4
4
1
7
=
4
4
×
4
+
3
=
4
4
3
Slide 13 - Diapositive
Adding fractions
Slide 14 - Diapositive
Adding fractions - Using lcm
Slide 15 - Diapositive
Adding Fractions
9
2
+
9
4
=
.
.
.
2
1
+
9
4
=
.
.
.
8
5
+
3
2
=
.
.
.
Slide 16 - Diapositive
Adding fractions
9
2
+
9
4
=
9
6
=
3
2
2
1
+
9
4
=
2
×
9
1
×
9
+
2
×
9
4
×
2
=
1
8
9
+
1
8
8
=
1
8
1
7
8
5
+
3
2
=
8
×
3
5
×
3
+
8
×
3
8
×
2
=
2
4
1
5
+
2
4
1
6
=
2
4
3
1
=
1
2
4
7
Slide 17 - Diapositive
Adding fractions - According to the book
9
2
+
9
4
=
9
6
=
3
2
2
1
+
9
4
=
1
8
9
+
1
8
8
=
1
8
1
7
8
5
+
3
2
=
2
4
1
5
+
2
4
1
6
=
2
4
3
1
=
1
2
4
7
Slide 18 - Diapositive
Worktime
You work neatly by…
… reading the
theory
(again) before asking a question to your classmate.
…
raising a hand
before asking a question to the teacher.
… if the teacher is busy, remember your question and
move on
.
Help:
Exercises: N/A
Assignments:
Pages: 64-67
Exercises: 22, 24, 26 and 27.
Assignments from the planning of WEEK 1:
Extra:
Exercises: N/A
Slide 19 - Diapositive
Now I can…
… simplify fractions.
… turn mixed numbers into improper fractions and vice versa.
… add and subtract fractions.
Reflection
Slide 20 - Diapositive
Date
Tuesday October 8th 2024
Paragraph
§2.3 Fractions
Pages from the handbook
Pag. 68-69
Subject
Multiplying Fractions
Today is the day...
Slide 21 - Diapositive
I can already…
… simplify fractions.
… turn mixed numbers into improper fractions and vice versa.
… add and subtract fractions.
Prior Knowledge
Slide 22 - Diapositive
Simplify Fractions
7
1
2
+
7
4
=
.
.
.
9
5
−
2
1
=
.
.
.
1
8
1
5
+
1
3
1
2
=
.
.
.
Slide 23 - Diapositive
Adding fractions
7
1
2
+
7
4
=
7
1
6
=
2
7
2
9
5
−
2
1
=
2
×
9
5
×
2
−
2
×
9
1
×
9
=
1
8
1
0
−
1
8
9
=
1
8
1
1
8
1
5
+
1
3
1
2
=
1
8
×
1
3
1
5
×
1
3
+
1
8
×
1
3
1
8
×
1
2
=
2
3
4
1
9
5
+
2
3
4
2
1
6
=
2
3
4
4
1
1
=
1
2
3
4
1
7
7
=
1
7
8
5
9
Slide 24 - Diapositive
Adding fractions - According to the book
7
1
2
+
7
4
=
7
1
6
=
2
7
2
9
5
−
2
1
=
1
8
1
0
−
1
8
9
=
1
8
1
1
8
1
5
+
1
3
1
2
=
2
3
4
1
9
5
+
2
3
4
2
1
6
=
2
3
4
4
1
1
=
1
2
3
4
1
7
7
=
1
7
8
5
9
Slide 25 - Diapositive
After this lesson, I can…
… multiply fractions.
Goals
Slide 26 - Diapositive
Multiplying Fractions
Slide 27 - Diapositive
Multiplying Fractions
9
2
⋅
9
4
=
.
.
.
1
1
6
⋅
7
3
=
.
.
.
3
2
÷
5
4
=
.
.
.
Slide 28 - Diapositive
Multiplying Fractions
9
2
⋅
9
4
=
9
⋅
9
2
⋅
4
=
8
1
8
1
1
6
⋅
7
3
=
1
1
⋅
7
6
⋅
3
=
7
7
1
8
3
2
÷
5
4
=
3
⋅
4
2
⋅
5
=
1
2
1
0
=
6
5
Slide 29 - Diapositive
Exercise 33 (Homework)
Slide 30 - Diapositive
Worktime
You work neatly by…
… reading the
theory
(again) before asking a question to your classmate.
…
raising a hand
before asking a question to the teacher.
… if the teacher is busy, remember your question and
move on
.
Help:
Exercises: N/A
Assignments:
Pages: 64-67
Exercises: 22, 24, 26, 27, 30, 32, 33, 35 and 36.
Assignments from the planning of WEEK 1:
Extra:
Exercises: 38
Slide 31 - Diapositive
Now I can…
… multiply fractions.
Reflection
Slide 32 - Diapositive
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