Question 911437
Three methods
1)Which pieces can be combined to make a 4 ft* 8 ft sheet of plywood.
two 2 ft*3 ft make 4 by 6 
You can add two  2*2 's to this to make  one 4*8 sheet
and two 2*3 on another sheet will be the other 
So we need at least  two 4*8 sheets

2)
You can go to Home Depot or Lowes and have them solve this problem for you. 
It would be a good experience for the boy too.


3)
Another way is make cut outs from paper and scale to inches instead of feet.
Cut out at least two 4*8 inches sheets of paper

Cut four pieces of paper that are 2 in x 3 in and 
two pieces that are 2 in x 2 in and try to fit them on the 4 *8 in sheets