🔷 All About 2D and 3D Shapes

What you’ll learn

1. Flat 2D ShapesName flat 2D shapes and count their sides and corners.A 2D shape is flat, like a drawing on paper. Triangles have 3 sides and 3 corners, squares and rectangles have 4 of each, and a circle is special with no corners and no straight sides — just one smooth curve. Counting sides and corners helps you tell every flat shape apart.
2. Solid 3D ShapesName solid 3D shapes and match them to everyday objects.A 3D shape is solid and takes up space, so you can hold it. A cube is like a dice with 6 flat square faces, a sphere is a round ball with no flat sides, a cylinder is a can with round sides and flat circle ends, and a cone rises from a round bottom to a point.
3. Shapes All Around UsSort shapes into flat 2D and solid 3D and review everything you learned.Every shape belongs to a family: flat 2D shapes you can draw, or solid 3D shapes you can hold. Balls are spheres, boxes are cuboids, cans are cylinders, and dice are cubes. Now you can name the shapes hiding all around your home and playground.

Questions this course answers

Grounded in trusted sources

• PBS Kids — shapes and geometry
• Khan Academy Kids
• Britannica Kids
• National Council of Teachers of Mathematics

Every Wunder lesson is built from real, reputable sources — never invented.

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