Software Development

  Assignment 1 Guide

Investigation Phase

Introduction

Task e. Enter the dimensions required into the drawings

Carry out the example calculations

Task f. Make notes of the calculations to be used

Carry out the Task


Introduction

Objectives

This guide  will help you to: -   

   Complete assignment 1 - task e and task f

You should have a copy of  following two assignment documents.

Assignment Scenario

Assignment 1: Investigating the problem


Task eEnter the dimensions required into the drawings

In order to complete Assignment 1 Task e, you need to print the Scenario document.

The last page of the scenario shows the different field and lawn shapes. 

Although you are expected to create a program that can deal with different lawn and field sizes, for this task you are required to label the diagrams using the example lawn and field sizes.  This is for practice - to help you to figure out the calculations that need to be done for any lawn  and field sizes.

The example lawn and field sizes are given in the scenario document.  I will also show them here.

Lawn 1:

Lawn 1 is a rectangle measuring 18 metres by 12 metres.

Lawn 2:

Lawn 2 is a circle with a diameter of 16 metres. The radius is half the diameter.  You should write the radius on the drawing and not the diameter.  This will make your calculations easier.

Field 1:

The big rectangle measures 120metres by 100 metres, and the small rectangle (the bit missing) measures 55 metres by 50 metres.

Field 2:

The field is 100 metres by 75 metres and the pond has a diameter of 25 metres. The radius is half the diameter.  You should write the radius on the drawing and not the diameter.  This will make your calculations easier.

~~Activity~~

Activity A

  1. Write the dimensions for each lawn and field on your diagram.
     
  2. Make sure you write the task number and your name on the top of the page

Carry out the example calculations

In order to complete Assignment 1 Task f, you need  to make notes of the calculations to be used.  The instructions for calculating are given in the scenario document are given in the scenario document. I will also give them here.

Calculate the Areas

Lawn 1:

Write down the formula for calculating the area of the rectangle. e.g.

  • Area of lawn rectangle = length * width

Using the formula, calculate the area using the example measurements you wrote on your diagram, e.g.

  • Area  of example lawn1 rectangle = 18 * 12  =

Lawn 2:

Write down the formula for calculating the area of a circle. e.g.

  • Area of a circle = 22 * r * r / 7

The fraction 22/7 will give nearly the same value as pi.

Using the formula, calculate the area using the example measurements you wrote on your diagram, e.g.

  • Area of the example lawn2 circle =

Field 1:

It is best to think of this field as a big rectangle with a small rectangle removed to form the L shape. You can calculate each rectangle separately and subtract the missing rectangle from the large rectangle.

  • Area of large rectangle = length1 * width1
       

  • Area of small rectangle = length2 * width2
      

  • Total field1 area =  Area of large rectangle - Area of small rectangle

Using each formula, calculate the area using the example measurements you wrote on your diagram, e.g.

  • Area of the example large rectangle =

  • Area of the example small rectangle =

  • Total area of the example field1 L-shape =

Field 2:

To calculate the area of the field with the pond in the middle, first calculate the area of the rectangle, then calculate the area of the circular pond, then subtract the pond area from the rectangle area.

  • Area of field2 rectangle = length * width
      

  • Area of a field2 circle = 22 * r * r / 7
       

  • Total field2 area =  Area of rectangle - Area of circular pond

Using each formulae, calculate the area using the example measurements you wrote on your diagram, e.g.

  • Area of the example rectangle =

  • Area of the example pond =

  • Total area of the example field2  =

~~Activity~~

Activity B

  1. Using a calculator, convince yourself that the fraction 22/7 is nearly the same value as pi.

Calculate the Seed Amounts

Now that you have found the areas of each shape, you can now calculate the amount of seeds required for each one.

Write down the general formula for calculating the amount of seeds

Amount of seeds (grams) = Area * number of grams that cover 1 square meter

For lawn seed, 30 grams of seed covers one square metre of lawn

For hay meadow seed, 20 grams of seed covers one square metre of lawn

Now you have all the information you need to calculate the amount of seed needed for each area.

  • Amount of seeds for lawn1 = Area * number of grams that cover 1 square meter

  • Amount of seeds for lawn1 =

  • Amount of seeds for lawn2 = Area * number of grams that cover 1 square meter

  • Amount of seeds for lawn2 =

  • Total lawn seed =

  • Amount of seeds for field1 = Area * number of grams that cover 1 square meter

  • Amount of seeds for field1 =

  • Amount of seeds for field2 = Area * number of grams that cover 1 square meter

  • Amount of seeds for field2 =

  • Total hay meadow seed =
        

Calculate the Number of Bags

Now that you have found the amount of seeds for each area, you can now calculate the number of bags.

Write down the general formula for calculating the number of bags of seed

number of bags of seed = amount of seed / grams in a bag

Lawn seed is purchased in 1 kilogram bags

Hay meadow seed is purchased in 5 kilogram bags

Now you have all the information you need to calculate the a number of bags of each seed type.

  • Number of bags of lawn seed = amount of lawn seed / grams in a bag

  • Number of bags of lawn seed =

  • Number of bags of hay meadow seed = amount of meadow seed / grams in a bag

  • Number of bags of hay meadow seed =

 

~~Activity~~

Activity C

  1. You can check your answers for the lawn calculations using this quiz.
           
         
  2. You can check your answers for the field calculations using this quiz.

 


Task f. Make notes of the calculations to be used

Now that you have practiced calculating amounts of seed and number of bags, using the example measurements, now you need to write down the general formulae

~~Activity~~

Activity D

  1. Try this quiz to practice using formulae and determining if the calculations in the correct order

Writing down general formulae will be useful for when needing to perform calculations on fields and lawns that are different sizes to the examples.

~~Activity~~

Activity E

  1. Write down the formulae for calculating the four different areas. I'll start you off...
  • Area of lawn rectangle = length * width
  • Area of lawn circle =
  • Area of field L-shape =
  • Area of field with pond =
        
  1. Write down the formulae for calculating the four amount of seeds needed for each area.  I'll start you off...
  • Amount of seeds for lawn1 = Area of lawn rectangle * number of grams that cover 1 square meter
  • Amount of seeds for lawn2 =
  • Amount of seeds for field1 =
  • Amount of seeds for field2 =
     
  1. Write down the formulae for calculating the total amount of lawn seed and the total amount of hay meadow seed.  I'll start you off...
  • Total lawn seed =

  • Total hay meadow seed =
       

  1. Write down the formulae for calculating the number of bags of lawn seed and the number of bags of hay meadow seed.  I'll start you off...
  • Number of bags of lawn seed =
  • Number of bags of hay meadow seed =

    


Collect the Tasks

You need to hand in the following for task e and task f.

Write your name in the document header. The structure of your documents should be as follows:-

 Assignment 1: Investigating the Problem:

      Task e: Enter the dimensions required into the drawings 

This page should show the diagram of the lawn and field shapes with the dimensions written on

 Assignment 1: Investigating the Problem:

      Task f: Carry out the example calculations 

This page should show your calculations where you used the example lawn and field measurements from your diagram

 Assignment 1: Investigating the Problem:

      Task f: Make notes of the calculations to be used 

This page should show your general formulae from Activity C

 


Have you finished all the tasks and handed them in? 
If so - well done.

 

 

   

  Unit Information

Assessment

Syllabus

Scheme of Work

Notes &Tutorials

Assignments

Quizzes

Books & Things

Links