Help me find this movie!

When i was in 5th grade we all had a big movie day where they took all the classes down to watch movies. One of the movies had a character that looked EXACTLY like me. Everyone in the room was talking about how i was in the movie. I have been trying to find this movie for a while and just have no luck. I dont rememeber alot but ill put down what i do and hopefully you can help me. From what i remember there were two kids one boy and a girl and they were lost in the forest somewhere. They couldnt be found and there parents i guess were at this camp type area. When they were lost they bathed in a river (i remember because the boy got naked and everyone was like omg thats prob what you look like naked and i was embarassed) but then later in the movie the boy used his power ranger (or something like that) belt buckle to send out a signal so that his father could find them.