Tuesday 28th June – Scale Drawings

LEARNING OBJECTIVE: Understand what is meant by a scale drawing and be able to use a real scale drawing to find real lengths, understand what measurements will be needed to draw a scale drawing of the classroom

SUCCESS CRITERIA: You will be able to reduce and enlarge a picture using a grid. You will be bale to find lengths from a scale drawing. You will be able to make appropriate measurements of our classroom in preparation of creating a scale drawing of the classroom

STARTER: Can you draw the picture of the cartoon cat on the two grids – one should become half size and the other should become double the size. (15 mins max if possible)

LESSON: Using the plans from my house extension get students to talk about what they show, the scale....

Use your ruler and calculator to measure and work out the length on the drawing and the real size of the following from the scale drawings

1. Using the front elevation
   
   1. How wide is the upstairs small bedroom window
      
   2. How high is it from the floor to the gutter
      
   3. How wide is the garage door
      
   4. How high is the lowest section of the garage
      
   5. How wide is the central window of the downstairs bay window
      
2. Using the side elevation
   
   1. How high is the door
      
   2. How wide is the total length of the gutter
      
   3. How far is it from the front of the house to the middle of the door
      
3. Using the rear elevation
   
   1. How wide is the roof on the extension
      
   2. How wide is the upstairs bigger window
      
   3. How high above the ground is the top of the chimney
      

Part Two

How can we draw a scale drawing on a single piece of A4 paper of Maths Room 1 looking from above (The Plan View)

We should show where all doors, windows and walls are

What measurements will we need? Use my Sketch of the room to write your measurements down on . – Take Measurements of the room in pairs

PLENARY: Compare measurements from each of the groups / pairs. Using the scale drawing of another room ask questions about lengths