 So this is an example of cognitive load in practice and I've got a complete example here of a 3d cube that I typically demonstrate in my teacher training sessions and this is something I would do as a very first lesson in Simple graphics with year six or year seven students So I'm just going to talk you through the process worked examples following a recipe moving from novice towards Expert requires a step-by-step process, which is why we find instructions Well, not all instructions, but we generally find instructions very helpful So what I would do with this You know it come take people through the process as opposed. I'm just going to draw a rough clock face I've marked out 12 o'clock 2 4 6 8 and 10 o'clock and I'm just going to draw some guidelines between 8 to 2 10 to 4 o'clock and 12 to 6 now these represent the angles that I need to make my pen strokes my guidelines and There are three stages to this. I'm going to show you how we can get towards this stage a stage one I guess eight to two o'clock. I need to draw three Pen strokes from eight o'clock to two o'clock equally parallel From in this position Stage two ten to four o'clock There's the angle so I'm just going to move my hand across and I need to just follow that angle and draw three more Pen strokes Ideally parallel and equally spaced ten o'clock to four o'clock and This represents stage two Stage three I've got four parallelograms here and this 12 to six o'clock line Needs to go through the center of the parallelogram. So I've got one on top of the other here So this is our center line. So it's a little bit wonky, but that's pretty much I'm a little bit off here, but this is the kind of principle straight through the middle 12 to 6 o'clock There's the right parallelogram. So there's the center. So straight through the middle if I can there's the left and There's the third parallel so we've got three lines again parallel going straight through now We need to start this is ideally the starting point we can I'll just draw two circles around here These are the two starting points to try and find an easy way for a novice a beginner to start so Depending on the length of your lines We're kind of looking if I just model where those rings would be on this diagram That's where they are there. If I just draw the other two here Okay, those are the tops of your Cubes if I just swap pens and Connect all these together this now is the top of my cube Going to the back right of the cube. So we've got the line down here back right the back left there the bottom left Then we've obviously got the front and then the back right and that's The first stage so what we're looking for Anyone that's doing this for the first time is to be able to do it in a sequence So it becomes to a point of expertise automatic So I'll just draw a couple of examples And then to kind of take the process further the closer your lines together The smaller the cube becomes Okay, the wider the lines Let's try and see if I'm fit this in the video. I just missed it there Let me just move my camera slightly. There we go the wider the lines the larger the cube okay, so We return to our first attempt and we want to move to this stage Ideally, I want to be able to try and do this without the guidelines So that's going to take some time we might want to use a pencil we can rub the guidelines out If we follow the process just here one more time So eight to two o'clock Ten to four o'clock twelve To six o'clock and I'm trying to draw I'm using a pen. I'm trying to draw as light as I can So that I can really make the final cube Stand out from the guidelines because again moving to expert we'd want to move away from using the guidelines To draw this freestanding cube and you can see I've just added a bit of shading here. So I'll just add a Kind of background effect here So I'll follow the angle of the lines Okay, just a simple bit of rendering Then we could rather than where I've gone here add the dark red around the outside to make it really stand out I could just emphasize the Back edge a kind of shadow effect I suppose and we could just assume that we have a Sun on this side or a light bulb with the Light reflecting across the top so the bottom hidden side So you can see that it's dark So pen strokes nice and heavy on this side same angle and I might want to just go over that one more time Okay to emphasize the dark edge obviously this is going to be lighter So I'll just change the angle of my hatched lines Maybe just put in a few and again this side just changing the angle slightly. Let's go this way this time Let's go this way Again nice lightly hatch because we've probably got a darker corner here So we'll kind of hatch that in half so you can play around without adding a pencil adding more detail etc But this is just a worked example the step-by-step grid Following the steps moving to a point where you can then add render to a point then where you could ideally draw the cube learn the principles of how to draw the cube in 3d and Then add the graphics later and again taking it one step further if I Show you one more demonstration. So let's just draw this cube again Vertical lines let's instead of drawing the cube. I might want to Use the same area to draw a square base pyramid I then follow the guidelines further and Then I can add a cube underneath and then we have the beginnings of a house and So on and so forth. So a little demonstration cognitive load and practice. Yes, there's the finished Version but we need to model Through step-by-step how students can move from becoming a novice towards an expert and again this works in any context And depending on what you're teaching your students. So hope that little video demonstration helps