passage: A day at the beach .
  When Sam woke in the morning , he was super excited !
  Today was the day !
  It was Sunday , the day that Sam 's mom and dad had promised to take Sam to the beach .
  Sam 's grandma had given a pail and shovel to Sam to use in the sand .
  At breakfast Sam was so excited he was wiggling in his seat !
  Mom told Sam that they would leave when the big hand on the clock was pointing to the 10 , and the little had was pointing to the 12 .
  Mom asked Sam if he would like to help make sandwiches for the trip , and Sam said that he wanted to help .
  Dad said , " let 's make a game of it , we need to make a sandwich for each of us .
  There are three of us , so we need three sandwiches .
  Let 's count as we make the sandwiches ! "
  Sam counted as mom made the sandwiches , one for dad , one for mom and one for Sam .
  Then mom started to make another sandwich !
  " Mom ! "
  said Sam , " we have three sandwiches and that makes one sandwich for each of us . "
  Sam 's mom laughed , " You 're right Sam ! "
  Sam 's mom said she was being silly .
query_and_answer: What was Sam acting like that caused mom to laugh ? || He explained why they didn't need another sandwich
evidences: Sam 's mom laughed , " You 're right Sam ! " Sam 's mom said she was being silly .