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.
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
http://www.asknumbers.com/MetersToKilom ... rsion.aspx
http://www.convertunits.com/from/meters/to/kilometers
http://www.metric-conversion.net/conver ... meters.htm
practice test
http://www.kwiznet.com/p/takeQuiz.php?C ... 3&Num=12.8
http://www.unc.edu/~bangel/quiz/testmet.htm
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
further studies
http://www.aaamath.com/mea69_x2.htm
practice test
http://www.aaamath.com/mea69x10.htm
http://www.proprofs.com/quiz-school/qui ... &quesnum=1
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
Assignment: maths Inside Out; page 42; Ex. 6.1, Qus. 13 a and b
Page 43, Ex. 6.2, Qus. 13 and 14
further studies
http://www.infoplease.com/ipa/A0001659.html
practice test
http://www.ixl.com/math/grade-3/compare ... -of-weight
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
Assignment: Maths Inside Out; page 44; Ex. 6.3, Qus. 4, 5 and 6
Ex. 6.4, Qus. 6 and 8
further studies
http://www.themoldstore.info/Weights_and_Measures.html
practice test
http://www.mcwdn.org/Decimals/MetricMeasureQuiz.html
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
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
http://easycalculation.com/what-is-hcf.php
http://www.freeganita.com/en/alg/2_5.htm
practice test
http://www.mathgames4children.com/Quizz ... index.html
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
further studies
http://www.math.com/school/subject1/les ... 3L3GL.html
practice test
http://www.aaamath.com/fra66ix2.htm
http://www.softschools.com/quizzes/math ... z3262.html
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
https://skydrive.live.com/?cid=99bc2c15 ... 2A33%21159
further studies
http://www.mathsrevision.net/gcse/pages.php?page=1
watch video
http://www.youtube.com/watch?v=DQKL7bh2nO4
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://skydrive.live.com/?cid=99bc2c15 ... 2A33%21158
further studies
http://www.mathsteacher.com.au/year10/c ... addsub.htm
http://www.themathpage.com/alg/add-alge ... ctions.htm
http://www.cliffsnotes.com/study_guide/ ... 66256.html
http://www.mathsisfun.com/algebra/fract ... gebra.html
practice test
http://www.math.com/school/subject1/S1U4Quiz.html
http://www.mathopolis.com/questions/q.p ... _2268_2269
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://skydrive.live.com/?cid=99bc2c15 ... 2A33%21157
Assignment: New General Maths for JSS 2, Page 101. Ex. 11g Number 1 b, d, f and k
further studies
http://www.mathexpression.com/simplifyi ... sions.html
practice test
http://www.proprofs.com/quiz-school/qui ... &quesnum=1
watch video
http://www.youtube.com/watch?v=G0JxAC2X_nU
http://www.youtube.com/watch?NR=1&featu ... 3JR-_GzmAY
