On the Pdf sheet you will find a plan to make a model prism. Print it, carefully cut it out and glue it together to make a model prism. Now take some time to look at your model prism carefully – see where the shadows lie. This is easier if you have a single light source. Take your time. This is what obsvervational drawing is all about. Look and really understand what is going on – then transfer your observations to the drawing. You may have seen artists measuring by eye with a thumb on their pencil. You can measure like this too, so you can convince yourself that your drawing has the same proportions and angles as the thing that you are looking at. Remember, 3D representation is about tricking the eye into believing it is seeing something that is not real. There will be more about measuring like this later. Task: Here are two everyday objects that are made from prisms – a tent and a slice of cake. Watch the video and see how they are drawn then draw your own version. If you don’t get it quite right the first time, don’t worry. Just do it again! Now, can you think of any other objects that are constructed from a simple prism shape?

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