2 rules questions

[Clark0215]

While playing a fifth grade tournament yesterday there were two violations called I had never seen before. They were called by certified Illinois high school referees.

The first one occurred on a baseline out of bounds play. My player inbounded the ball and then took three or four steps along the baseline before stepping back into the field of play. He was whistled for not stepping directly onto the court.

The second one happened earlier in the day. The same player came to a jump stop and then pivoted. He was whistled for a traveling violation. The explanation I got was that he had already used his pivot on the jump stop.

Can someone explain these rules a little better for me and whether or not they should have been violations?