• Ontario School Ability Examination

    Boxed set of wood blocks with dots, coloured blocks, wood puzzle and blue hard cover book
    January 01

    Ontario School Ability Examination, Practice Set Material

    Ontario Ministry of Education

    Wood, cardboard

    2012.X.664

    The Canadian National Committee for Mental Hygiene surveyed the intelligence of approximately 1,500 Toronto school children between 1919 and 1921.