Module 2: Science - investigating materials.Module 1: Developing an understanding of place.Expand Primary: Social studies and the arts.Module 3: Promoting communication in an additional language.Module 2: Using community voices in your classroom.Module 1: Reading and writing for a range of purposes.Module 3: Investigating measurement and data handling.Module 1: Investigating number and pattern.Module 3: Community issues and citizenship.Module 1: Personal development – how self-esteem impacts on learning.Key Resource: Working with multigrade classes.Key Resource: Using storytelling in the classroom.Key Resource: Using role play/dialogue/drama in the classroom.Key Resource: Researching in the classroom.Key Resource: Using questioning to promote thinking.Key Resource: Planning and preparing your lessons.Key Resource: Using the local community/environment as a resource.Key Resource: Working with large classes.Key Resource: Tools for planning and carrying out investigations in Science.Key Resource: Using investigations in the classroom.Key Resource: Using group work in your classroom.Key Resource: Using explaining and demonstrating to assist learning.
Key Resource: Being a resourceful teacher in challenging circumstances.Key Resource: Using mind maps and brainstorming to explore ideas.Expand Key resources: Effective teaching approaches.So see these are some of the ways we can use a diagram to illustrate all the different forces that interact on moving and stationary objects.
I also have a force applying downward pressure on there that's the force of gravity and then I have a force equal force going up which is the normal force, the force of the table being applied back up to the book. So it's applying the force back on that book okay. Okay but as I'm moving it across the table there's another force pushing against and that force is the friction of the table okay. So I obviously have a force of acceleration which I'm applying to the book to cause it to move. Let's take the book on the table and now let's move that book along the table. So two forces on that falling balloon okay. So there's another force acting on it here and that is the force of the air friction or air resistance which is pushing up on it okay. But that falling balloon with a constant velocity again has the force of gravity fg forcing it down but constant velocity means that it's not accelerating it's been moving at a constant velocity. Because if it's just falling like that book we pretty much have just the force of gravity right okay. Let's look at a falling balloon, now the reason we're using a balloon is that I want to have something that's falling at a constant velocity okay. So if I drew a diagram of my book, I've got force down which I'm going to call fg force of gravity but I have another force acting up on that book and that's the normal force, that's the table applying equal force on that book so the book doesn't fall to the ground okay. So there's another force that's acting on the book and that force is what we call a normal force. But the book is not moving right there's no change in the book. But if I have my book and I hold it on a table okay gravity is still a force applied to that book. Let's look at a couple of examples, let's take a book okay and if I have my book and I drop it there's obviously a force that's acting on right that's the force of gravity. These are basically diagrams that show the force or forces that are acting on an object and they help us illustrate how these forces interact to move that object or not to move that object. Let's look at some force body force diagrams.