What is the name of this children's educational show from the 1970s or 80s?

It was a math or counting show for younger kids. I remember watching it in 1st grade, in 1985 (but it was probably a rerun at that time; I remember it looking old at the time). They used to count toy cars and pencils, etc. I feel like the theme had something to do with trains, or maybe one of the kids on the show wore a conductor's hat or something. It's driving me nuts!