One fact about pi for KS2 students is that it's a number that helps us work out the distance around a circle!
Pi (π) is a special number in maths that's a little bit more than 3. We use it to find out the circumference, which is the distance all the way around a circle.
Here's a simple way to understand it:
- Imagine you have a circle, like a pizza.
- The diameter is the distance straight across the pizza, through the middle.
- The circumference is the distance around the edge of the pizza.
The circumference is always a bit more than three times the diameter. To be more precise, the circumference is "pi" times greater than the diameter! Pi is approximately 3.141592 and the number of digits after the decimal point is endless. Yes, Pi is a number that goes on forever! So, instead of saying "a bit more than three times," we use pi to be super accurate.
Therefore, a key fact is:
- Pi helps us find the circumference (distance around) a circle if we know the diameter (distance across).
Here's a table to help you remember:
| Term | Meaning |
|---|---|
| Pi (π) | A special number (approximately 3.141592...) |
| Diameter | Distance across a circle |
| Circumference | Distance around a circle |
