Video Transcript
Equal Parts with Different
Shapes
In this video, we will learn how to
investigate halves, thirds, and quarters of different shapes. This circle has been divided into
two equal parts. We call each part a half. This square has also been divided
into two equal parts or halves and so has this rectangle. Each of these shapes is half of
another shape. Half a circle, half a square, and
half a rectangle look very different. But they’re all halves.
If we want to divide the square
into two equal parts or two halves, we can do this in different ways. We could divide them using a
horizontal line or a line that goes across. We could divide the square into two
equal parts using a vertical line or a line that goes up and down. We could also divide the square
into two equal parts using a diagonal line or a line that goes from opposite corner
to opposite corner. Each of the parts are equal in
size.
This is a rectangle. It’s been divided into three equal
parts. Each part is equal in size. Each part is called a third, one
divided into three equal parts. If we take a shape and we divide it
into four equal parts, we call each part a quarter. Let’s look at some example
questions where we’re asked to identify halves, thirds, or quarters of different
shapes.
What fraction is shaded? We can see this circle has been
divided into three equal parts. And one out of those three parts is
shaded. One third of the circle is
shaded.
What fraction is shaded? This square has been divided into
four equal parts or quarters. And one out of the four quarters
are shaded. One quarter of the square is
shaded.
Pick the rectangle that has one
quarter shaded. This rectangle has been divided
into four equal parts. And one of those parts or one
quarter is shaded blue. This is the rectangle that has one
quarter shaded. Pick another way to shade one
quarter of the rectangle. Each of these rectangles has been
divided into four parts. But these parts are not equal. The parts of different sizes. These parts are not equal
either. They’re different sizes.
Both of these rectangles have been
divided into four equal parts or quarters. Which one has one quarter
shaded? This rectangle has one quarter
shaded. This rectangle has one quarter
shaded. And this is another way to shade
one quarter of the rectangle.
In this video, we’ve learnt how to
find halves, thirds, and quarters of different shapes.
