Lesson video

Hi there, my name is Miss Darwish and I am a primary school teacher from West London.

So for today's lesson, this is going to be the first lesson on transformations, and we're going to be happening to look at translating shapes onto a grid.

But before we start today's lesson, if you could just make sure you are sat in a nice, peaceful, quiet environment, ready to start the lesson.

So today's lesson is as far as we're going to start by looking at translations and what translations are.

And then we're going to move on to something called congruent, and we're going to see what that word means exactly and look at some examples of congruent shapes.

And then we're going to be looking at how to translate an object or from a grid.

And then of course, at the end, there will be a quiz for you to do.

So let's get started.

For this lesson, you will need a pencil and a piece of paper as always.

And the third item you may or may not need, but just have it there just in case you might find it helpful using a rule for what we're going to do today.

So go and get those things and we can start the lesson.

First of all, you've got shape onto a grid.

What do you notice about it? What do you notice? Now, what do you notice? So before we have one shape, now we've got two shapes.

What's the same and what's different between these two shapes? What's the same and what's different? Let's start by looking at what's the same.

The shape is the same size.

Do you agree? Yeah, the shape is the same size.

The shape is the same orientation.

That means it's facing the same direction.

Yeah, both shapes are facing the same direction.

What's different then? The shape's position has moved.

Otherwise the shapes would be on top of each other, but they're not, they're in different places.

They're in different positions.

That's what's different.

The shape has moved five positions to the right.

Let's count that together.

One, two, three, four, five, it's moved five spaces to the right.

And of course what's different is the colour is different as well.

Now, these shapes, we would say these shapes are congruent.

Can you say the word congruent for me.

Congruent, well done.

So congruent shapes, we have two shapes and they are exactly the same in size, orientation, everything about them is the same, except they are in different positions.

So the only thing that's different about these shapes, the size is the same, the width and the length are the same, but they are in different positions.

One is to the right, one is to the left.

And that's what we would say are congruent shapes.

Have a look at these three shapes.

Which two shapes are congruent and why? Which two shapes are congruent and why? Point on the shapes.

Well done, these two shapes are congruent.

Why, because they are the same size.

They are the same orientation.

The third shape is very different to them.

It's a lot smaller.

Let's see, you're getting good at this.

Which two shapes are congruent now? These two shapes are congruent.

Well done, if you said that.

Again, everything about them is the same apart from where they are.

I want you to have a look at the point on the rectangle.

Now you see the point of the rectangle.

Can you point to where it is on the other rectangle on the mint green colour rectangle.

Where is that point? Point to screen now.

Okay, well done if you got that right.

Can you see the points are exactly the same? So if we choose one point from the original shape and we find that point on the second shape, we can then see and count how the shape has moved.

So for example, here we can see the shape has moved four spaces to the right.

Can you count that for me? Four spaces to the right, well done.

Let's have a look at another example.

Look at the point on the triangle.

Where is it on the blue triangle now? Point on the screen.

Where is that point on the blue triangle? Well done if you got that right.

Now, how did that point move? So the point that was on the purple triangle, how did it get to the point on the blue triangle? Can you describe the translation? How did it move? It moved down three spaces, one, two, three, and it moved left two spaces, one, two.

So it moved down three spaces, left two spaces.

So we would say the translation.

Translation again, it just means where the shape has moved.

Did it go up, down, right, left, how did it move? So we would say this shape moved down three, left two.

Or you can say it also moved left two spaces, down three spaces.

Either way it doesn't matter.

It doesn't really make a difference which one comes first.

Look at the point on the quadrilateral.

Just what I'm going to want you to do now.

Where is the point on the other quadrilateral? Well done if you got that right.

Now, how has it moved? Jot down what you think, how did the shape move? So when we look at how the shape moved, I find it easier.

This is a secret, by the way, I find it easy just to pick one point and then you just focus on where and how that point's moved.

And that just tells you how the shape's moved.

So how did that point move? Let's have a look together.

It went up two and then four to the right.

Well done if you said that.

Or also another option you could have had, right four, up two, or up two, right four.

Really doesn't make a difference, which way.

So you can say, one two up and then one, two, three, four to the right.

Or you can say one, two, three, four to the right and two up.

Well done, I want you just to pause the video now, what we're going to be doing is we're going to be looking at, this is the task that you're going to do.

You're going to help the squirrel find his food.

Now the squirrel got from point A to point B, because point B is where he discovered where the food was.

So I want you to describe the translation of the squirrel from point A to point B.

Can you do that for me? Once you've had a go, come back and we will go through all the answers together.

Hopefully you found that okay and not too tricky.

Let's have a look what happened with the squirrel then.

So let me just move myself out of the way there.

So we had the squirrel at section or point where it was here and it was translated to point B because he was trying to find his food.

Now, just pick a point, any point, let's pick this point here and we can count it together.

So this point here would be this point here.

So let's count.

Should we count down or to the right? Let's count to the right.

So here I said right 24, down eight, let's check that together.

One, two, three, four, you counting with me, five, six, seven, eight, nine, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24.

24 to the right.

And then let's count down one, two, three, four, five, six, seven, eight.

So right 24, down eight or what else could you have had? Hopefully you had two options for me, down eight and then right 24.

Again, like I said before, it really doesn't matter which way.

So you can say right 24, down eight, or you can say down eight, right 24.

Move myself out of the way again.

If you would like to share your work with us at Oak National, then please, please ask your parent or carer first and ask them to share it on Twitter, tagging @OakNational and to include the #LearnwithOak.

Now it's time for you to complete the quiz, but before I let you go, I just want to say a massive well done to all the brilliant learning that you have done today.

First lesson of transformations, all about translations.

Hopefully you found that nice and easy and not too difficult and good luck with the quiz.