Lesson video

Hi friends, it's Ms. Molnar here, and we have been celebrating Harold's birthday this week.

Harold's been doing things like, making Play-Doh cakes and presents but, he's decided that he really wants a real birthday cake.

So we thought, you could help us make a real birthday cake for Harold today.

Now, we're going to go through in a second, all the items that you are going to need to ask a parent and carer for today, to help you with this lesson.

All right Harold, go see what items we're going to need.

All right, so for today's lesson, you're going to need quite a few items, but make sure you ask your parent or carer first.

So, since we are going to be exploring weight today, we are going to look at measuring how heavy or how light an item is.

Now, in your kitchen, you might have something to measure how much something weighs when you're baking.

So you might have something like this called a scale.

So, if you've got something similar like this, or if you've got some balance scales, go ask your parent or carer what you might have,` and this will help you with today's lesson.

I'm also going to use a balance scale but you might not have one of those and that's okay.

Now, you're also going to need some items that you can weigh and lift and feel how heavy they might be.

So it could just be some random objects from around the house.

But again, make sure you ask your parent or carer.

So I might be looking at weighing some popcorn, I've got some pasta sauce, and I've also got some chickpeas.

So, you're going to want to gather some of those items. Then, for the cake, there's quite a few things we need.

We'll need some butter, we're going to need some flour, some sugar, some eggs, vanilla extract, and some milk.

Now, don't worry if I went through that a little bit quickly, because you will be able to see the ingredients and the steps along the way.

All right, pause the video and go start to gather, some of those items. Oh, and of course you'll probably need a mixing bowl and a spoon.

And maybe some other measuring spoons and cups to help you with today's lesson.

All right, pause the video and go grab what you need and we'll come back together.

All right, we're going to start today's lesson by getting our brains switched on.

We're going to do some finding, one more than a number.

So you can use the number truck below, find the number, and then, you're going to do a jump, one more, and that will help you find, one number larger than that number, or one more.

All right, here we go.

We need to find one more than three, okay? If you were to imagine adding one more block to that number three, what number would it give you? That's right, if you add one more block, to number three, it's going to be the number four.

And you can see that on our number truck as well, that we started on three and we did one more, to get to four.

All right, let's have another go.

This time, can we find one more than the number five? Okay, so imagine you had again look at that number five.

If you were to add one more block, one more cube to that number five, what number would it give you? That's right, you would get the number six.

And you can see that on the number truck below.

Okay, and we've got now the number one.

If we add, one more block to number one, what number will we get? If you said two, well done, way to go.

That was really great everyone, fantastic.

So we're going to be looking at today, how much items weigh today.

We're going to be using some words to describe the weight of objects.

So, we're going to be looking at, how heavy objects are.

So we can use the term heavier to describe, how heavy an object might be compared to another one.

I say, you say heavier, well done.

We're also going to talk about some items, that might be lighter than another object.

I say, you say lighter, well done.

Okay, so, we're back with Paulie's kitchen here with our image.

Let's have a think.

If we're thinking about, how heavy or light some of these items are, let's choose some items to compare.

So, if we look at the cat and the mouse, below the table, I wonder, out of the cat and the mouse, which of those two animals would be heavier, or would weigh more? So, if you were to lift up the cat, and to lift up the mouse, which one, would be harder to lift up because it's heavier? I want to know which one you've chosen as heavier, the cat or the mouse? But I also want to know, why you chose that animal, okay? So take, 10 more seconds to have a think.

Which animal did you choose as the heaviest one, between the cat or the mouse, and why do you think that one is heavier? All right, well, if you said the cat is heavier, you are so right.

We could say the cat is heavier, than the mouse, because it's a larger animal.

We know that it's going to be heavier than a tiny little mouse.

We could also say, the mouse is lighter than the cat, because it's smaller.

Well done, all right, let's take a look at two more items in the picture.

So, we've got, let's look at one of these red chairs.

And, we've got a big yellow table.

Which of the two do you think is going to be lighter? Do you think the chair is going to weigh lighter or, is the table going to weigh lighter and why do you think that? Take a second to have a think about that.

All right, if you said that the chair is lighter than the table, you are right.

Because again, we can see how big the table is, that it must be heavier, than the chair.

Well done, everyone.

All right, so this is when I'm going to start to take some items from my home, and I'm going to look at describing which of them are heavier and which ones are lighter when I'm comparing them.

So what I might do, is I might estimate, which item is heavier first.

That means I might make a really good guess to say why I think an item might be heavier, okay? And then I'm going to lift both with my hands, and then I'll be able to just feel which one is actually heavier.

Then, I'm going to show you how I can prove, for sure that an item is heavier or lighter.

All right, so the first thing I'm going to compare is, I'm going to compare how heavy, my box of popcorn is, and how heavy my bag of flour is.

So, I'm going to make a little bit of a guess first and estimate, okay? Well, my box of popcorn looks much smaller, okay? And my flour looks a bit heavier, and it looks longer and taller.

So my estimate is going to be, that the flour bag is heavier, okay? So I'm going to lift both up now.

I'm going to lift up the popcorn first and feel it, okay? And then, I'm going to lift up my flour and feel it.

Oh, the flour feels much heavier because it's harder to lift.

All right, so, now I'm going to show you, how we can prove that, the flour is heavier using my balance scale.

Okay, so I've got a balance scale here.

Have you seen one of these before? You might've seen one at school before, or you might have something, like this similar at home.

But if you don't that's okay.

But I'm going to show you how we can prove, that the flour is actually heavier, than the popcorn.

All right, right now, my scale, the balance scales, they're at the same level.

That tells me, that the amount of weight on both sides of the scale at the moment are equal, okay? When I add an item, to one side of the scale, then, it's going to weigh that side down, to show that the item is heavier.

The side that goes down the furthest is going to be the heaviest.

So right now, point to the screen, which side of the scale has the most weight, or the heaviest amount of weight? That's right, the popcorn right now is weighing down the scale on this side.

What do we think is going to happen, when I place the flour on the other side of the balance scale? That's right, if we're right with our estimate or our guess, we think that the flour is going to weigh more or it's going to be heavier.

So it's going to make the popcorn side go up.

Let's see what happens.

All right, so I'm going to carefully place this on the scale, and there we go.

What has happened to the scale now? That's right, the flour is much heavier than the popcorn.

So the popcorn side of scale has gone up to show that it's lighter, and the flour is heavier.

All right, fantastic.

Let's try another couple of items. So, this time, I'm going to grab, my pasta sauce.

And I'm going to grab, a jar of chickpeas, okay? So out of the pasta sauce and the chickpeas, which one do we think is going to be heavier and why? Well, my estimate is going to be that the pasta sauce is heavier.

Because it's a much bigger jar, than the chickpeas.

So let's try it out.

I'm going to put the chickpeas on this side, and then I'm going to put the pasta sauce, on this side.

Oh my goodness, what has happened? That's right, we can see that the pasta sauce weighs, much more, than the chickpeas.

So the pasta sauce is weighing down the scales.

So, if you've got a digital, or even a mechanical scale at home, you could prove which one is heavier by placing them on the scale.

So if I go back to my chickpea can, or my tin, okay? I can get a parent or carer to help me see, how much it weighs.

So I can see here that we've got 262 grammes for the chickpea tin.

Now, if the chickpea tin is lighter, than the pasta sauce then, it will have a lower weight than the pasta sauce.

So let's just remember around 200 for the chickpeas.

Now I'm going to place my pasta sauce on the scale.

And, oh my goodness we've got a number higher than 700 for grammes.

So we know, that because we've got a larger number we know that the pasta sauce is heavier than the chick pea tin.

Or the chick pea tin is lighter than the pasta sauce.

Well done, everyone.

All right, for your talk task, we would like you, to ask your parent or carer for some of those items, that you could, start to weigh together.

So, if you don't have any scales at home, that's okay.

You can take some items like the bag of flour or cereal box, or some things that your parent or carer can help you gather, and you can make your guess first or your estimate.

Which of the two items is going to be heavier, which is going to be lighter? Then, you're going to pick up the items and feel them and compare them to see which one is heavier or lighter.

If you do have a scale, you can get your parent or carer to help you, weigh them and see and prove which one is heavier.

Then you can use the sentence stem to say, the is heavier than the.

Or, the is lighter than the.

So, if I was talking about flour and a cereal box, I could say, the cereal is lighter than the flour.

All right, pause the video and have it go at that and then we'll come back together.

All right, this is when we're going to start, measuring out, and putting all our ingredients in to make the cake.

So I've started with my measuring bowl here.

I need to crack one raw egg into a bowl.

So I'm going to take my egg, crack it into my bowl, and then I'm going to need to whisk it, to mix it up, okay? So you could do this with a fork or you could do it with a whisk quickly.

All right, let's see step two.

Step two, I need to add one tablespoon of milk.

And I'm going to get a parent or carer to help me carefully measure out, one tablespoon of milk.

Add half a teaspoon of vanilla extract.

All right, so I've got my vanilla extract, and I need a half of a teaspoon.

I'm going to get my parent or carer to help me carefully pour up half of a teaspoon.

And pour that in.

All right, so now what we're going to need to do, is, we're going to have to figure out, how much sugar we need.

The amount of sugar that we're going to need to put in.

This is where we're going to have to do some weighing.

So I'm going to show you the two different ways you might try it.

So, I'm going to use my balance scale but you might use, an actual mechanical or digital scale at home to do this as well.

So, my instructions tell me that I need to have the same amount of sugar, that is equal to the weight of one egg.

I put the egg on one side and then I'm going to carefully pour some sugar, onto this side.

Oh my goodness.

What has happened? That's right, I've got too much sugar.

Remember we want it to weigh the same amount as the egg.

Okay so, now it's a little bit heavier on the egg side.

So I'm going to keep going back and forth, until I get them to balance out, a little bit more.

I would say those are starting to look a little bit more balanced.

Now, you might not have balance scales to actually do that.

So what you might do is you might take a kitchen scale if you got it, and find out how much an egg weighs, okay? So I can see that my egg weighs, 58 grammes.

So what I can do, to make sure I've got the same amount of sugar, is, I'm going to put, my bowl back on, I'm going to make sure I set it to zero, so it's weighing nothing, okay? And I'm going to add my sugar, and I want to make sure when the sugar goes in it's the same amount as the egg, okay? So I'm going to start pouring.

There we go, right on the dot, 58 grammes.

So I want the same amount of butter to go in as my egg.

I'm going to keep going, until I can get about 58 grammes of butter.

There we go.

We've got about the same, Oh, a little bit out, about the same amount of butter as equal to the egg.

All right, now I need the flour to equal the same amount.

So again, the flour is equal out to 58 grammes.

So I'm going to start at zero again.

That's our magic number today, 58.

There we go.

Now, our last step is we want to mix all of the ingredients together.

So I'm going to mix it up now.

Well, we hope you enjoyed mixing together all of those ingredients, measuring them out and weighing them, to make a cake for Harold's birthday.

And maybe you can even ask your parent or carer to help you, bake it in the oven.

But you need to ask permission first.

All right, everyone.

Well that's all we have time for for today, but we really hope you enjoyed that.

And I'm really sure, and Harold's sure, and I know he just wants everyone to celebrate his birthday.

But we're sure your teacher would love to see all the amazing learning you've done at home today.

And, if you'd like, we'd love it if you could ask a parent or carer, to take a photo of your learning and share it on our social media here at Oak.

Thanks again everyone, and we'll see you next time.