Featuring Dr James Grime. More links &amp; stuff in full description below ↓↓↓ Extra footage from this interview: Blog post about the .<br>Extra footage from our Squared Squares video: More links &amp; stuff in full description below ↓↓↓ Check out .<br>Matt Parker reveals his pride and joy - the mysterious Parker Square! More links &amp; stuff in full description below ↓↓↓ T-Shirt: .<br>Matt Parker shows off his Magic Square party trick (unlike magicians, mathematicians often reveal their secrets). More links &amp; stuff in full description below .
