Mark-Paul Gosselaar takes daddy duty seriously — especially when it comes to the safety of his four children.
“A big thing for me is helmets. I grew up racing motocross and bicycles and all that stuff. So helmets to me is a big, big thing,” Gosselaar, 41, told PEOPLE at Safe Kids Day in Los Angeles on Sunday.
He pleads, “Every time you get on your bikes or scooters or skateboards, please put on your helmet.”
Aside from riding bikes, other activities in the Gosselaar household — he and wife Catriona are parents to 8-week-old daughter Lachlyn Hope and 18-month-old son Dekker Edward, while the actor is also dad to Ava Lorenn, 9, and Michael Charles, 11 — include reading.