- Definition
A three-dimensional object is anything that takes up space and has length, width, and height, like a ball or a box.
A ball is a three-dimensional object because you can hold it in your hands and it's not flat.
How to teach this in 30 seconds
Try this analogy: A three-dimensional object is like a toy block you can hold in your hand, not a flat picture of a block.
Ask your child: Can you find something in the room that isn't flat?
Common mix-up: Kids may confuse a drawing of a shape with a real object. A three-dimensional object is something you can hold and feel all its sides, not something flat on paper.
Examples
- A building block you can stack.
- An apple you can hold and eat.
three-dimensional object is a term used in Ontario’s Kindergarten to Grade 8 curriculum.
Where this shows up
+2 more mentions across the curriculum
The descriptions on this page are SmartStudy’s own original, plain-language writing — not the Ministry’s wording. They are aligned to the Ontario Curriculum, © King’s Printer for Ontario. For the Ministry’s official wording, see the source link below. SmartStudy is an independent service and is not affiliated with, endorsed by, or sponsored by the Government of Ontario or the Ministry of Education. Ontario Curriculum and Resources ↗
