UPDATE: 5 Things You Need To Know Today in Framingham: March 14

1. Happy Pi Day!

In 2009, the U.S. House of Representatives declared March 14 (3.14) to be National Pi Day, to celebrate the importance of math, science, and education in our lives, while sparking interest in learning.

Pi is a mathematical constant, the ratio of a circle’s circumference to its diameter. Many believe Pi to be the most intriguing number in all of mathematics. Being an irrational number, π cannot be expressed exactly as a common fraction,so its decimal representation never ends and never settles into a permanent repeating pattern.

Teachers: Send Patch photos from your Pi day activities.

Photo Tweeted by Sen Ed Markey.

2. Updated: The Governor did sign the legislation.

At 10 a.m., Governor Charlie Baker is expected to sign landmark legislation into law to address the deadly opioid and heroin epidemic plaguing the Commonwealth. The bill, titled An Act relative to substance use, treatment, education and prevention, passed with unanimous votes in both legislative chambers and contains many provisions recommended by the Governor’s Opioid Addiction Working Group last year. The legislation includes new requirements around opioid prescription limitations, student screenings, prescriber education, and physician consultation of the Prescription Monitoring Program.

3. Framingham Library Trustees are scheduled to meet tonight at 7 in the Ablondi Room in the Memorial Building.

4. Over the weekend, four Framingham High musicians performed at Symphony Hall in Boston.

5. A Wellesley man is expected to be arraigned in court today in regards to a hit-and-run of a Framingham cyclist, 47, in Wellesley on Friday night.

Wellesley Police arrested Connor Campanell, 21, 55 Livermore Road, of Wellesley. He was charged with operating a vehicle, while under the influence of alcohol.