I have a student, who has autism, being capable of incredible mental tricks in order to understand mathematic equations, but requires a strict visual representation/visual learning in able to comprehend it. For example, the number 1 to him is a "dot" and 2 being two "dots".

3 being three "dots", but he visualizes connecting lines between the dots, which would be a triangular shape.

4 being a square and so forth.

Very reminiscent of ancient Babylonian or Akkadian representations of numbers. He is also innately(I think anyway) associating numbers with letters or alpha-numerals, like the Ancient Greeks and Hebrew language.

I digress, as the main reason for this question is, how am I able to elaborate on the hexadecimal or base 16 numeral system to him, in a visually friendly way similar to how I've described his approach to base 10.

He's a damn wizard when it comes to geometry and seems to be tied to his visual learning of numbers/maths/etc. His overall approach seems almost identical to how Pythagoras or the Pythagoreans would approach mathematics.

Is there a geometric or "creative" way to visualize and understand hexadecimal numeracy?

Thanks