▁propos es ▁that ▁people ▁can ▁interact ▁directly ▁with ▁mathematical ▁and ▁scientific ▁ideas ▁via ▁material ▁construction ▁methods ▁( such ▁a ▁cro ch et ▁and ▁paper ▁fol ding ), ▁not ▁simply ▁via ▁abstract ▁equations ▁and ▁formulas . ▁I FF ▁is ▁a ▁non pro fit ▁organization ▁through ▁which ▁the ▁sister s ▁produce ▁their ▁Cro ch et ▁Cor al ▁Re ef ▁project , ▁an ▁ende avor ▁they ▁created ▁as ▁an ▁art istic ▁response ▁to ▁climate ▁change ▁and ▁the ▁dec imation ▁of ▁the ▁Great ▁Bar rier ▁Re ef ▁in ▁their ▁Australian ▁hom eland . ▁The ▁project ▁also ▁respond s ▁to ▁the ▁problem ▁of ▁ocean ic ▁pl astic ▁tr ash . ▁While ▁eng aging ▁aud ien ces ▁around ▁the ▁world ▁with ▁these ▁environmental ▁concerns , ▁the ▁Cro ch et ▁Cor al ▁Re ef ▁also ▁serves ▁as ▁way ▁to ▁teach ▁non - E uclidean ▁geometry . ▁The ▁fr illy ▁cur ling ▁shapes ▁of ▁the ▁Cro ch et ▁Re ef ▁are ▁manifest ations ▁of ▁hyper bol ic ▁surfaces , ▁the ▁same ▁forms ▁made ▁by ▁living ▁re ef ▁organ isms . ▁The ▁ability ▁to ▁cro ch et ▁such ▁forms ▁was ▁discovered ▁in ▁ 1 9 9 7 ▁by ▁D ain a ▁Ta imi ņ a , ▁a ▁Corn ell ▁University ▁math ematic ian . ▁▁ ▁Through ▁their ▁work ▁with ▁I FF , ▁the ▁W ert heim ▁sister s ▁have ▁created ▁exhib itions ▁on ▁scientific ▁and ▁mathematical ▁them es ▁at ▁art ▁gall eries ▁and ▁science ▁museum s ▁around ▁the ▁world , ▁including ▁the ▁ 2 0 1 9 ▁Ven ice ▁B ienn ale