Using valid and invalid experimental designs to teach the control of variables strategy in higher and lower achieving classrooms

Journal of Educational Psychology (2014) - Comment
doi: 10.1037/a0034375 issn: 1939-2176 issn: 0022-0663

Robert F. Lorch, Elizabeth P. Lorch, Benjamin Dunham Freer, Emily E. Dunlap, Emily C. Hodell, William J. Calderhead