LWYSA's published "Rules of Competition" summarizes any differences between these rules and local practice, as well as offers clarifications of how these rules are applied within LWYSA. You can read that document [a1]HERE.
If you have questions about a specific rule, please feel free to use our "Ask a Ref" facility.
There are no rosters or player cards to worry about. While coaches are required to have a roster with them, the Referee does not check these rosters for LWYSA in-house recreational matches.
The duration of the Match should be printed on the player card. For U-10, U11 and U12 matches, they play 30 minute halves. This is a change for 2016
If play must be stopped by the referee because of injury, the restart (effective Fall 2014) will always be a dropped ball, which is in accordance with the FIFA Laws of the Game. Washington State used to have a special rule that awarded an IFK instead if one team was in obvious possession of the ball. That rule was eliminated May 2014, and injuries are now dealt with in accordance with the Laws of the Game.
If a player takes an improper throw-in, there are no "do-overs" at U10. The other team is given the ball. Referees should consider letting very minor problems with a throw-in go without blowing their whistle. The foot that comes up a couple of inches (1 or 2) - or the player that steps onto the field because there is no room (the parents are crowding the touchline) need not be whistled. However, you MUST blow your whistle for throw-ins where a foot comes way up or the player disregards where they must be for the throw-in. Coaches need you to help the players learn to make a correct throw-in.