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3
A triangle has three straight sides.
Class 1 · Bangla Version · Mathematics
Shapes and patterns
Explore shapes and patterns with an example and your own answers.
About this lesson and its coverage
Original Kidemy foundation practice · Read the example, write your answers, then check. This starter is shared across class versions; it is not a complete board-specific lesson or course.
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Learn the idea
Shapes have features such as straight sides and corners. A repeating pattern repeats the same small unit.
Worked example
A triangle has 3 straight sides. In red, blue, red, blue, the repeating unit is red, blue.
- Read the example and explain which rule or evidence it uses.
- Try each task yourself, then compare the answer and its reason.
Your written practice
Show your working on paper. Check your answer, then choose Next.
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4
A square has four corners.
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blue
The two-colour unit repeats.
Take it further
Apply the idea in a new situation and explain your method. Open writing needs a guardian or teacher to review it.
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4
A rectangle has four straight sides.
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square
The repeating group is circle, circle, square.
Write in your own words. A guardian or teacher should review this response.
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The triangle has three straight sides; the square has four.
Count the straight sides on the drawings.
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