Secondary School Mathematics Curriculum Improvement Study
... that the Secondary School Mathematics Curriculum Improvement Study of the 1960s and 1970s sought to end the separate yearly teachings of algebra, geometry, trigonometry, etc. in American high schools?
... that the <b id="mwCis"><a href="./Secondary_School_Mathematics_Curriculum_Improvement_Study" id="mwCiw" rel="mw:WikiLink" title="Secondary School Mathematics Curriculum Improvement Study">Secondary School Mathematics Curriculum Improvement Study</a></b> of the 1960s and 1970s sought to end the separate yearly teachings of <a href="./Algebra" id="mwCi0" rel="mw:WikiLink" title="Algebra">algebra</a>, <a href="./Geometry" id="mwCi4" rel="mw:WikiLink" title="Geometry">geometry</a>, <a href="./Trigonometry" id="mwCi8" rel="mw:WikiLink" title="Trigonometry">trigonometry</a>, etc. in American high schools?