Lesson Notes By Weeks and Term - Senior Secondary School 2

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  4. Calculations on area of farmland

Term: 1st Term

Week: 7

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 2 periods each

Date:       

Subject:    Agriculture

Topic:-      Calculations on area of farmland

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

  1. State the formulas for calculating the area of a farmland
  2. Carry out some calculations

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S ACTIVITY

STEP 1

INTRODUCTION

The teacher reviews the previous lesson on farmstead

Students pay attention

STEP 2

EXPLANATION

She states the formula for finding the area of farmland

Students pay attention and participates

STEP 3

DEMONSTRATION

She carries out some calculations

Students pay attention and participate

STEP 4

NOTE TAKING

The teacher writes a summarized note on the board

The students copy the note in their books

 

NOTE

AREA OF FARMLAND

  1. Area of farmland

This is the area of shape of the farm. 

A = L x B for rectangular

A = ½ bh for triangle.

 

  1. Number of plant stand /plant population

This is the number of plants in an area of farm land.

Plant population =        Area of spacing of farmland

                                                  spacing

  1. Spacing

This is simply the distance between one crop to the next

 

NOTE:

1 hectare = 10,000m2

 

Example 1

If the length and width of a farmland are 80m x 40m respectively, and the spacing of a maize crop plant is 12cm x 12cm, calculate

(a) the area of the farmland;

(b)  the plant population (maize) in the give area;

(c) the total population if there are two plants per stand.

 

SOLUTION

  1. a)          Area of farmland = Length x Width

= 80m x 40m = 3200m2

(b)          Spacing of crop = 12cm x 12cm or 0.12m x 0.12m

Area of 1 stand of crop=0.12m x 0.12m = 0.0144m2

Plant population              = Area of farmland(m2)           

                                                 spacing(m2)

Plant population = 3200m2

                             0.0144m2

The plant population (maize) is estimated at 222,222 stands

(c) since there are two plants per stand the total plant population = 222,222 x 2 = 444,444 maize plants

The total population= 444,444 maize plants

 

EVALUATION:   1. State the formula for calculating the area of farmland, spacing and plant population

  1. If the length and width of a farmland are 20m x 20m respectively, and the spacing of a maize crop plant is 40cm x 40cm, calculate

                             (a) the area of the farmland;

                             (b)  the plant population (maize) in the give area;

                             (c) the total population if there are two plants per stand.

 

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively