Puzzle Cube

I had two puzzle designs and i decided to use the first one because i found it to be more challenging. In addition to being challenging the second one actually had 6 pieces and i had to scratch the idea. The latest puzzle design consists of 5 pieces and all the pieces consists more than 4 blocks and less or equal to 6 blocks. At the moment i have the final  design and i have CADed all of the parts. The only thing remaining is the assembly which has already been done with math blocks provided in the classroom.