🧩 Building and Combining Shapes

What you’ll learn

1. Putting Shapes TogetherCombine small shapes to build bigger shapes like squares and rectangles.Shapes are like building blocks. Two matching triangles make a square, two squares side by side make a rectangle, and four squares make a bigger square. Putting small shapes together builds brand new bigger shapes.
2. Making New ShapesBuild pictures and new shapes by combining triangles, squares, and other pieces.Shapes fit together like a puzzle to make new things. A square plus a triangle makes a house, and pattern blocks build flowers, stars, and animals. Even a hexagon can be made from six triangles fitting around the middle.
3. Breaking Shapes ApartBreak a bigger shape into smaller shapes and tell which pieces can rebuild it.Big shapes can be split into smaller ones: cutting a square from corner to corner makes two triangles. Some pieces can rebuild a square — like two equal triangles or four small squares — while a circle or a single triangle cannot.
4. Building in 3DSee how flat shapes fold together to make a solid shape like a cube.Flat 2D shapes can build solid 3D shapes. Six squares folded together make a cube — a box you can hold — because a cube has 6 square faces. Building and combining shapes works in flat pictures and in solid objects alike.

Questions this course answers

Grounded in trusted sources

• PBS Kids
• Khan Academy Kids
• Britannica Kids
• BBC Bitesize

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

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