Do Not Differentiate Unless It's For Calculus Creative Sketchbook - 110 Large Blank Pages 8.5" x 11" This super funny & cute calculus joke says "do not differentiate unless it's for calculus" and is an amazing math themed joke for any math professors or teachers out there who love showing off the humorous side of the mathematics field Grab this hilarious calculus pun as a gift for anyone in your life who is obsessed with math jokes or is having fun in their calculus class this year Great for any kids who are learning to love math and laughing at calculus jokes Empty sketchbook with framed border for daily creative use - great gift idea for artists this holiday season
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