%0 Journal Article %T Improving Grade R mathematics teaching in South Africa: Evidence from an impact evaluation of a province-wide intervention %A Hazell %A Eleanor %A Roberts %A Nicky %A Spencer-Smith %A Garth %J Journal of Power and Energy Engineering 电力与能源 %D 2019 %R 10.17159/2520-9868/i76a03 %K mathematics %K early grade %K at scale %K Marko-D %K Grade R %K evaluation %U http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S2520-98682019000200003&lng=en&nrm=iso&tlng=en