olid ated ▁and ▁published ▁their ▁find ings ▁in ▁ 2 0 0 9 . ▁This ▁list ▁is ▁indeed ▁incomplete ; ▁there ▁are ▁hundreds ▁of ▁districts ▁using ▁this ▁curr icul um . ▁ ▁Notes ▁ ▁External ▁links ▁ ▁Pear son ▁/ ▁Scott ▁F ors eman ▁website ▁for ▁curr icul um ▁ ▁National ▁Science ▁Foundation ▁ ▁A ▁collection ▁of ▁links ▁to ▁reviews ▁of ▁and ▁comment aries ▁of ▁T ER C : ▁Investig ations ▁in ▁Number , ▁Data , ▁and ▁Space , ▁Bas ▁Bra ams , ▁Elizabeth ▁Car son , ▁and ▁NY C ▁H OL D ▁ ▁Crit ical ▁" Math emat ically ▁Correct ▁second ▁grade ▁review " ▁" Math ▁Education : ▁An ▁In con ven ient ▁Tr uth ", ▁M . J . ▁Mc D erm ott , ▁Q 1 3 ▁FO X ▁K CP Q - TV ▁ ▁" B ey ond ▁T ER C ▁National " ▁message ▁board ▁for ▁concerned ▁citizens ▁ ▁ST OP ▁T aking ▁Ex cess ive ▁Ris ks ▁with ▁our ▁Children ▁ ▁Category : E ducation ▁reform ▁Category : Math emat ics ▁education ▁Category : Math emat ics ▁education ▁reform <0x0A> </s> ▁David ▁Christian i ▁( 2 5 ▁December ▁ 1 6 1 0 ▁– ▁ 1 3 ▁February ▁ 1 6 8 8 ) ▁was ▁a ▁German ▁math ematic ian , ▁phil os opher ▁and ▁Luther an ▁the olog ian . ▁He ▁became ▁an ▁ordinary ▁professor ▁of ▁mathematics ▁at ▁the ▁University ▁of ▁Mar burg ▁in ▁ 1 6 4 3 , ▁ordinary ▁professor ▁of ▁the ology ▁at ▁the ▁University