▁V ancouver . ▁ ▁Early ▁life ▁and ▁education ▁S inc la ir ▁was ▁born ▁in ▁Gren o ble , ▁the ▁daughter ▁of ▁Canadian ▁academ ics ▁who ▁were ▁on ▁s abb at ical ▁there ; ▁she ▁grew ▁up ▁in ▁Cal g ary . ▁She ▁began ▁her ▁under grad uate ▁studies ▁at ▁McG ill ▁University ▁in ▁business , ▁but ▁quickly ▁switched ▁to ▁mathematics , ▁and ▁then ▁earned ▁a ▁master ' s ▁degree ▁with ▁Len ▁Berg gren ▁at ▁Simon ▁F ras er ▁on ▁the ▁history ▁of ▁mathematics ▁and ▁mathematics ▁in ▁medieval ▁Islam . ▁ ▁She ▁became ▁a ▁middle ▁school ▁teacher ▁of ▁mathematics ▁and ▁French ▁on ▁Bow en ▁Island , ▁S inc la ir ▁then ▁earned ▁her ▁Ph . D . ▁in ▁ 2 0 0 2 ▁from ▁Queen ' s ▁University ▁at ▁King ston , ▁under ▁the ▁joint ▁super vision ▁of ▁Peter ▁Taylor ▁of ▁the ▁Department ▁of ▁Mathemat ics ▁and ▁Statistics ▁and ▁William ▁H ig gin son ▁of ▁the ▁Fac ulty ▁of ▁Education . ▁ ▁Career ▁ ▁In ▁ 2 0 0 3 , ▁S inc la ir ▁accepted ▁a ▁joint ▁appointment ▁in ▁the ▁College ▁of ▁Natural ▁Sciences ▁and ▁the ▁College ▁of ▁Education ▁at ▁Michigan ▁State ▁University . ▁ ▁In ▁ 2 0 1 4 , ▁S inc la ir ▁and ▁Nicholas ▁Jack iw ▁developed ▁a ▁mathematical ▁app ▁target ed ▁at ▁children ▁ages ▁three ▁to ▁eight . ▁The ▁purpose ▁of ▁the ▁app ▁is ▁to ▁teach ▁children ▁math ▁through ▁" hand s - on " ▁learning . ▁Two ▁years ▁later , ▁she ▁was ▁named ▁a ▁Tier ▁