Big Valley Tractors is the biggest supplier in the agricultural communities of the San Joaquin County.

That's according to Frances Siria, who is the marketing specialist for the Stockton-based company. The Kubota Tractor featured at the event consisted of a bucket back scraper.

She was a special guest at Friday's Ag Day at Great Valley Elementary School.

Fittingly, the theme for the 17 annual event — the longest running agricultural school day experience of its kind in the area -- is the role of the tractor.

Big Valley Tractor served as this year's sponsor.

The educational purpose for Ag Day is the STEM Science and Common Core Math, which is covered in classrooms before and after the event.

Ag Day organizer Jeanne Pacheco was quick to acknowledge those who made this day possible.

"Our students did a great job with their fund raisers," she said. "We had our outside sponsors and a grant from the South San Joaquin Irrigation District."

The leadership and peer resource at Great Valley along with Manteca High, which provided the succulent plants, helped make this day special, Pacheco said.

She was also grateful for retired staff members and their involvement on the Ag Day Committee.

The morning event feature multiple presenters from the surrounding counties. They represented different aspects of agriculture while providing hands-on presentations for all grade levels (K-8th Grade). 

Bat Rescue Program from NorCal Bats along with the traveling Teachers from the Great Valley Museum, and a Hands-on Crime Lab were among the first-time presenters at Ag Day.

The Ag Day Committee is already planning for next year. Pacheco indicated that the theme will be "Farmers Feed the World."