Topic: Estimation of Dimensions
Specific topic: Conversion of metric length
Behavioral objective: At the end of the lesson, student should be able to:
(i) convert metres to kilometers and vice-versa
(ii) convert millimeters to metres and vice-versa
Reference book: New General Maths for JSS 1 page 9
Content
How do you convert millimeters to meters?
You divide the number of millimeters by 1000.
Reason: 1 meter equals 1000 millimeters
1000 meters = 1 kilometer, so you take the meters and divide them by 1000 and you get the kilometers.
https://youtu.be/ZNX-a-5jGeM
Example:
(a) Express in metres
(i) 3km
1000m = 1km
3km = 3 X 1000m = 3000metres
(ii) 5.1km
1000m = 1km
5.1km = 5.1 X 1000 = 5100metres
(b) Express in kilometers
(i) 4300m
1000m = 1km
;.4300m = 4300 = 4.3km
1000
(ii) 2km and 512m
= (2 X 1000m) + 512m
= 2000 + 512m
= 2512m
= (2512m / 1000)
= 2.512km
Evaluation:
Express the following in metres (a) 9km (b) 10km (c) 6.8km (d) 9.3km
Express as kilometer (a) 1500m (b) 3748m (c) 7km 502m
Assignment: Express as metres (a) 2.7km (b) 10.4km (c) 8km
Express as kilometers (a) 5km and 150m (b) 6km and 847m (c) 5822m
further studies
Convert Metre to Kilometre
practice test
LESSON 43
Topic: Addition and subtraction of length
Specific topic: Conversion of metric length
Behavioral objective: At the end of the lesson, student should be able to add and subtract given metric length.
Reference book: New General Maths Inside Out page 35
Content
Example:
(i)
Cm...mm
10...5
+ 15..7
12...5
38...7
(ii)
m...cm...mm
5...15...7
4...48...9
16...30...4
(iii)
cm...mm
9...6
- 5..9
3...7
(iv)
km m
5...150
-2..250
2...900
Evaluation: solve
(i)
cm...mm
15...8
+ 50...4
(ii)
m...cm...mm
9...78...7
+6..24...8
(iii) Add up: 5km 279m, 4km 485m and 1km 763m
(iv)
cm...mm
12...5
- 9..9
(v)
km...m
5...150
-2..250
Assignment: Maths Inside Out;
(i) Page 35, Ex. 5.2, Qus. 6 (a) and (b) 7 and 8
(ii) Page 36, Ex 5.3, Qus. 8, 9 and 10
https://youtu.be/Zkk7_-waKTI
https://youtu.be/J7szLguSLWg
further studies
Read More...
practice test
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LESSON 44
Topic: Addition of metric weight
Behavioral objective: At the end of the lesson, student should be able to add and subtract given metric weight
Reference book: New Inside Out page 42
Content
Example:
(i) 24cg + 9mg + 33cg and 8mg
Hint: 10mg = 1kg
10cg = gd
10dg = 1g
10g = 1 decagm
10decagm = 1 hectogm
10 hectogm = 1kg
1000kg = 1 metric tone
Cg...mg
24...9
33...8
58...8
(ii) 2kg 486g + 7kg 812g
Kg...g
2...486
7...912
(iii) 24cg 6mg - 1kg 7mg
Cg...mg
24...6
11...7
12...9
(iv) 7kg 150g - 3kg 560g
Kg...g
7...150
3...560
3...590
Evaluation: Add
(i) 25cg 9mg and 34cg 8mg
(ii) 9kg 563g and 2kg 599g
(iii) By how much is 920g short of20g
(iv)
kg...g
37...175
19...983
https://youtu.be/o4e_eqdEUxA
Assignment: maths Inside Out; page 42; Ex. 6.1, Qus. 13 a and b
Page 43, Ex. 6.2, Qus. 13 and 14
practice test
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LESSON 45
Topic: Multiplication/division of metric weight
Behavioral objective: At the end of the lesson, student should be able to multiply and divide given metric weights
Reference book: New Inside Out page 41
Content
Example:
(i)
5cg 4mg X 9
Cg...mg
5...4
X...9
(ii) 2kg 540g X 5
kg...g
2...540
X...5
Division
(i) 5cg 6mg/4
Cg...mg
4/5...6 20/
1...4
(ii) 24kg 20g/20
kg...g
24...20
1...201
Evaluation:
(i)
g...cg...mg
3...45...4
X......4
(ii)
kg...g
3...463
X...4
(iii)
g...cg...mg
8/9..53...6
(iv)
kg....g
2/29...100
https://youtu.be/3So5QN7yuCI
Assignment: Maths Inside Out; page 44; Ex. 6.3, Qus. 4, 5 and 6
Ex. 6.4, Qus. 6 and 8
further studies
Read More...
LESSON 46
Topic: Algebra
Specific topic: Highest common factor (HCF)
Behavioral objective: At the end of the lesson, student should be able to find the highest common factors of algebraic expressions.
Reference book: New General Maths for JSS 2 page 96
Content
Find the HCF of 12ab2 and 30a2bExample:
2 12ab2 30a2b
3 6ab2 15a2b
A 2ab2 5a2b
B 2ba 5ab
2b 5a
HCF = 2 X 3 X a X b
= 6ab
(ii) Find the HCF of 18a2y and 27x2y2
3...18a2y...27x2y2
3...6a2y...9x2y2
y...2a2y...3x2y2
....2a2...3x2y2
HCF = 9a
https://youtu.be/UxBO7GXFh_Y
Evaluation: Find the HCF of;
(a) ax and ay
(b) mn2 and m2n
(c) 5x2 and 10x
(d) 9ab2 and 12a2b
(e) 18xy and 6xy
Assignment: Find the HCF of;
(a) 5a2 and 20a2b
(b) 16xy2 and 4xy
(c) 17ax2 and 3by
(d) 21ad and 14bd
(e) 2x2 and 8x
further studies
Read More...
Play Maths Game
LESSON 47
Topic: Lowest Common Multiple
Behavioral objective: At the end of the lesson, student should be able to find the lowest common multiples of given algebraic expression
Reference book: New General Maths for JSS 2 page 97
Content
Find the LCM of 8a and 6a
2...8a...6a
2...4a...3a
2...2a...3a
3...a...3a
a...a...a
....1...1
LCM = 2 X 2 X 2 X 3 X a
= 24a
(ii) Find the LCM of 3x2y and 2xy2
2...3x2y...2xy2
3...3xy...xy2
x...x 2y...xy2
x...xy...y2
y...y...y2
y...1...y
....1...1
LCM = 2 x 3 x X x X x Y X Y
= 6x2y2
Evaluation: Find the LCM of;
(a) xy and yz
(b) x2 and x
(c) 3a and 4b
(d) 2x and 9ab
(e) ab and bc
Assignment: Find the LCM of;
(a) 3a and a2
(b) 3m and m2n
(c) 2a2 and 9ab
(d) 3x2y and 2xy2
(e) 6ab and 5b2
https://youtu.be/9ApwgScM3uI
further studies
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practice test
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LESSON 48
Topic: Algebraic fraction
Behavioral objective: At the end of the lesson, student should be able to express algebraic fractions in terms of equivalent algebraic fraction
Reference book: New General Maths for JSS 2 page 99
View Content below
watch video
http://www.youtube.com/watch?v=DQKL7bh2nO4
https://youtu.be/tlKN8NNNxdI
LESSON 49
Topic: Adding & subtracting algebraic fractions
Behavioral objective: At the end of the lesson, student should be able to add an subtract algebraic fractions
Reference book: New General Maths for JSS 2 page 99
View Content below
https://youtu.be/PIiGI5PDc5Q
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LESSON 50
Topic: Fractions with brackets
Behavioral objective: At the end of the lesson, student should be able to simplify algebraic fractions with brackets
Reference book: New General Maths for JSS 2 page 100
View Content below
https://youtu.be/9VL7X-hxpPo
Assignment: New General Maths for JSS 2, Page 101. Ex. 11g Number 1 b, d, f and k
further studies
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Watch More Video
http://www.youtube.com/watch?v=G0JxAC2X_nU
http://www.youtube.com/watch?NR=1&featu ... 3JR-_GzmAY