I love the notation on the one on the left: 23 x 9 = (20 x9) + (3 = 9). 
I have attached some multiplication posters where students were examing mathematical strategies for different sized numbers. Students did the work on regular paper and the teacher had them explain the process as she wrote what they did. She did this for two reasons: 1) other students need to be in the habit of listening and learning from others and 2) posters written by the teacher can be see more easily than those written by students.
Thank you for the pictures. Always helps to see the real actual results and teacher creations!
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