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METRIC LENGTH LESSON PLAN AND LESSON NOTE FOR PRIMARY, SECONDARY AND HIGHER INSTITUTIONS

SUBJECT : MATHEMATICS                W.A.L.A:  METRIC LENGTH                                                                
                    


Days
W.A..L.T: 
Content 
Plenary 
Starter 
Task 
Homework 

Monday 
To measure length of various objects.
Convert units of length

Resources 
Inside out 
Learn  
mathematics Book 6, page 
35

Ruler, Tape rule, meter rule. 


METRIC LENGTH
Length is a measurement that tells how long or wide something is. 
In the olden days people measure length of objects by using various parts of the body such as arm, foot, palms etc. But all these does not give accurate measurements. 
Today people use instruments like ruler, tape rule, meter tape to accurately measure the length of objects. The standard unit of length measurements s metre (m) 

CONVERSION OF METRIC LENGTH 
10 millimetres (mm) = 1 centimeter (cm) 
10 centimeters = 1 decimetre (dm) 
10dm = 1 meter (m) 
1000mm = 1m
100cm = 1m
1000m = 1 kilometer (km) 

Examples


Solutions 
a. The length of line a is 6cm
b. The length of line b is 2.5cm

 Pupils should be Able to ;
Define length, find the various units of measuring length and also use a ruler to measure length of certain objects.

 Begin the lesson by  showing pupils a video about how length is being measured. 
 
STARTER
The pupils are given a Worksheet which contains different lines, object and animals. Then with the aid of ruler they are to measure their lengths.

EXERCISES
Inside out 
mathematics Book 6, page 36, Exercise 5.1 (1a-d) and (2a-d)


Tuesday
  Add units of length

Resources 
Inside out 
Learn  
mathematics Book 6, pages  
36

Ruler, Tape rule, meter rule. 




ADDITION OF METRIC LENGTH
Addition of metric length is similar to basic addition arithmetic. But note:
10mm = 1cm, 100cm = 1m, 1000m = 1km
EXAMPLES
1. Add 10cm 5mm to 15cm 7mm and  12cm 5mm
  
Solution      
               

2. 5m 15cm 7mm + 4m 48cm 9mm + 6m 65cm 8mm
Solution
              

PLENARY 
Pupils should be able to add various units of lengths together.

STARTER
Start the lesson by asking them questions on units of length and perform basic addition operation.

EXERCISES 
Inside out mathematics Book 6, page 36  exercise 5.2  (1 - 5)

Inside out mathematics Book 6, page 36  exercise 5.2  (6 - 9)


Wednesday
Subtract metric lengths

Resources 
Inside out 
Learn  
mathematics Book 6, pages  
37

Ruler, Tape rule, meter rule. 

SUBTRACTION OF METRIC LENGTH
Subtraction of metric length is similar to basic subtraction operation. But note:
10mm = 1cm, 100cm = 1m, 1000m = 1km
EXAMPLES
1. Subtract 5cm 9mm from 9cm 6mm
    Solution
              


PLENARY 
Pupils should be able  to subtract various units of lengths.

STARTER
Begin the lesson by asking them questions on simple subtractions problems.

EXERCISES 
Inside out mathematics Book 6, page 37  exercise 5.3  (1 - 5)

Inside out mathematics Book 6, page 36  exercise 5.3  (6 - 10)


Thursday 
Multiply metric length
Divide metric length

Resources 
Inside out 
Learn  
mathematics Book 6, pages  
38 - 39

Ruler, Tape rule, meter rule. 

MULTIPLICATION OF METRIC LENGTH

EXAMPLE 
1. 3m 75cm 9mm x 3
Solution
     

DIVISION OF METRIC LENGTH
EXAMPLE

2. 26m 75cm 2mm ÷ 8
          


PLENARY 
Pupils should be able to multiply and divide various units of length. 

STARTER
Begin the lesson by doing the first example for them.

EXERCISES 
Inside out mathematics Book 6, page 37  exercise 5.4  (1 - 3) and 5.5 (1 – 3)
Inside out mathematics Book 6, page 37  exercise 5.4  (4 - 6) and 5.5 (4 – 7)

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