Grade 8 Math Book · Shapes & Geometry
Flatland: A Romance of Many Dimensions
by Edwin A. Abbott
A. Square lives in Flatland, a world with only length and width. When a mysterious Sphere visits from Spaceland, he has to imagine a third dimension he can't see.
Why it's useful
A classic that stretches students' thinking about dimensions and geometry.
- Dimensions. Points, lines, planes and space become easier to picture.
- Cross-sections. A sphere passing through Flatland looks like a growing and shrinking circle.
- Big questions. Could there be a fourth dimension?
Try it in class or at home
- Cross-sections. Slice clay shapes and draw what Flatlanders would see.
- Lineland. Describe what a creature in one dimension could see.
- Fourth dimension. Look at a tesseract drawing and discuss.