Shapes Around Us
CBSE · Class 4 · Mathematics
Quick revision notes for Shapes Around Us — CBSE Class 4 Mathematics. Key concepts, formulas, and definitions for last-minute revision.
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Key Topics to Revise
1. Buildings and Shapes
- Buildings can be made using blocks, boxes, bottles, cans, and shells.
- Older buildings were made with clay bricks, stone blocks, or wood.
- Today, concrete blocks and hollow blocks are also used.
2. Nets of Solids
- Folding a box flat open shows what an open box looks like.
- This flattened form is called the net of the box.
- Folding a net along its dotted lines reconstructs the box.
3. Prisms, Pyramids, and 3D Shape Counting
- The relationship between faces, corners, and edges is studied using F + V - E.
- F means number of faces, V means number of corners or vertices, and E means number of edges.
- Cube/Square Prism is a prism.
4. Angles and Lines
- Two lines meeting at a point create an angle.
- There are 7 angles in the house drawing.
- Angles are found in many places, such as corners of objects.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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