My son Barron had some math to do from school and they were trying to teach a 10 year old decimals. I thought that was ridiculous. I had my staff do the research. They had to look up what cubits were, but:
The Nevi'im and the Ketuvim (sections of Jewish scripture, comprising parts of the Christian "Old Testament") say that the value of pi is three!
Therefore I declare pi to be 3 for all schools in grades 1-8. They can use 3.0 if they like in 7th and 8th grade.