Course Content
Theme 01: Integers.
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Integers.
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Theme 02: Rational Numbers.
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Rational Numbers.
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Theme 03: Decimals.
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Decimals.
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Theme 04: Fractions.
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Fractions.
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Theme 05: Exponents.
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Exponents.
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Theme 06: Sets.
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Sets.
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Theme 07: Ratio and Proportion.
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Ratio and Proportion.
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Theme 08: Percentage.
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Percentage.
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Theme 09: Profit, Loss and Discount.
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Profit, Loss and Discount.
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Theme 10: Simple Interest
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Simple Interest
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Theme 11: Speed, Distance and Time
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Speed, Distance and Time
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Theme 12: Algebraic Expressions.
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Algebraic Expressions.
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Theme 13: Linear Equations..
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Linear Equations..
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Theme 14: Linear Inequations
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Linear Inequations
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Theme 15: Understanding Shapes
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Understanding Shapes
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Theme 16: Properties of Triangles.
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Properties of Triangles.
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Theme 17: Symmetry.
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Symmetry.
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Theme 18: Representation of 3-D in 2-D.
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Representation of 3-D in 2-D.
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Theme 19: Congruent Triangles.
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Congruent Triangles.
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Theme 20: Construction.
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Construction.
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Theme 21: Perimeter and Area of Polygon.
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Perimeter and Area of Polygon.
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Theme 22: Circumference and Area of a Circle.
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Circumference and Area of a Circle. – Part 1
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Circumference and Area of a Circle. – Part 2
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Theme 23: Collection and Organisation of Data.
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Collection and Organisation of Data.
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Theme 24: Probability.
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Probability.
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Mathematics – 7
About Lesson

In Class 7 Mathematics ICSE, the representation of 3D objects in 2D involves learning about different methods such as drawing projections, isometric drawings, and orthographic projections.

1. **Projections**: Students learn about drawing the projection of 3D objects on a 2D plane. This includes understanding how to draw the top, front, and side views of an object.

2. **Isometric Drawings**: Isometric drawings are used to represent 3D objects on a 2D surface. Students learn to draw objects using isometric grids and understand how to maintain the correct proportions.

3. **Orthographic Projections**: Orthographic projections involve representing 3D objects using multiple 2D views. Students learn to draw the front, top, and side views of an object to visualize its complete structure.

Overall, the focus is on developing the ability to visualize and represent 3D objects accurately in 2D, which is an important skill in geometry and engineering graphics.

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