Henk J. Pol

The Effect of Hints and Model Answers in a Student-Controlled Problem-Solving Program for Secondary Physics Education

Martin Goedhart, Egbert G. Harskamp, Cor Suhre, 2008 .

The effect of the timing of instructional support in a computer-supported problem-solving program for students in secondary physics education

Cor J. M. Suhre, Egbert G. Harskamp, Henk J. Pol, 2008, Comput. Hum. Behav..

How indirect supportive digital help during and after solving physics problems can improve problem-solving abilities

Cor J. M. Suhre, Egbert G. Harskamp, Henk J. Pol, 2009, Comput. Educ..