WEBVTT
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What comes next?
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We’ve been given a pattern made up of three different squares.
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To help us complete the pattern, first, we need to look closely.
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What do you notice about this pattern?
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Well, the first square has been divided into four equal parts.
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And all four parts have been shaded gray.
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If we look at the second square in the sequence, what’s changed?
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Well, we’ve still got a square which has been divided into four equal parts.
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But this time only three parts have been shaded gray.
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If we look at the third square in the sequence, we can see that this square only has two parts shaded gray.
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So it looks like the number of shaded parts is decreasing.
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We can think of the shaded parts as triangles.
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The first square has four shaded triangles.
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Then we’ve got three, then two.
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So the next square in the sequence should have one shaded part or one triangle shaded.
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Which of our shaded triangles should we delete?
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Let’s look more closely.
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This was our first square, and this is the first triangle which was erased or not shaded, on the left-hand side.
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This was the second triangle to be erased or not shaded.
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Which triangle should we delete next?
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It will be this one.
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This is the square that comes next.
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We looked closely at the pattern to see what we noticed, we worked out what changed each time, and we completed the pattern using this square.