▁can ' t ▁finish ▁his ▁home work ▁because ▁they ▁have ▁run ▁out ▁of ▁gl ue , ▁or ▁writing ▁two ▁different ▁ways ▁to ▁determine ▁if ▁ 2 ▁is ▁even ▁or ▁odd , ▁and ▁explaining ▁the ▁answer . ▁ ▁A do ptions ▁ ▁An ▁incomplete ▁listing ▁of ▁school ▁districts ▁that ▁have ▁adopted ▁T ER C ▁materials ▁▁ ▁Belle vue ▁School ▁District ▁adopted ▁it ▁for ▁ 1 0 ▁years , ▁dropped ▁in ▁favor ▁of ▁Math ▁Express ions ▁as ▁" out dated ▁and ▁in efficient " ▁for ▁ 2 0 0 8 . ▁ ▁Still water ▁School ▁District ▁ ▁R idge wood ▁Public ▁School s ▁ ▁Seattle ▁School ▁District . ▁Dro pped ▁in ▁favor ▁of ▁Every day ▁Mathemat ics ▁in ▁ 2 0 0 7 - 0 8 . ▁ ▁Reading ▁City ▁School s ▁( C inc inn ati , ▁O H ) ▁ ▁Frederick ▁County ▁Public ▁School s ▁( M ary land ), ▁dropped ▁in ▁ 2 0 1 1 ▁ ▁State ▁College ▁Area ▁School ▁District ▁( State ▁College , ▁PA ) ▁ ▁Prince ▁William ▁County , ▁V A ▁Public ▁School s ▁In ▁ 2 0 0 9 , ▁a ▁coal ition ▁of ▁parents ▁in ▁Prince ▁William ▁County , ▁V A ▁spons ored ▁a ▁study ▁of ▁those ▁districts ▁c ited ▁in ▁ 2 0 0 7 ▁by ▁Pear son ▁publishing ▁as ▁having ▁successfully ▁adopted ▁T ER C ▁Investig ations . ▁They ▁found ▁that ▁many ▁of ▁these ▁districts ▁either ▁had ▁dropped ▁the ▁curr icul um ▁or ▁were ▁supp lement ing ▁it ▁with ▁other ▁materials . ▁They ▁cons