| |
American Journal of Physics, Vol. 60, No. 7. (1992), pp. 627-636.
|
| |
Phys. Rev. ST Phys. Educ. Res., Vol. 5, No. 2. (Aug 2009), 020102.
|
| |
Journal of Educational Psychology, Vol. 101, No. 3. (2009), pp. 630-643.
|
| |
In SIGCSE '09: Proceedings of the 40th ACM technical symposium on Computer science education (2009), pp. 4-8.
|
| |
Phys. Rev. ST Phys. Educ. Res., Vol. 3, No. 2. (Jul 2007), 020101.
|
| |
American Journal of Physics, Vol. 75, No. 11. (2007), pp. 1017-1029.
|
| |
Cognitive Science, Vol. 5, No. 2. ( 1981), pp. 121-152.
|
| |
Journal of Experimental Child Psychology, Vol. 89, No. 2. (October 2004), pp. 140-158.
|
| |
ZDM, Vol. 39, No. 5. (20 October 2007), pp. 365-382.
|
| |
ZDM, Vol. 39, No. 5. (20 October 2007), pp. 405-418.
|
| |
ZDM, Vol. 39, No. 5. (20 October 2007), pp. 355-364.
|
| |
Cognitive Science, Vol. 12, No. 2. ( 1988), pp. 257-285.
|
| |
Cognitive Science: A Multidisciplinary Journal, Vol. 21, No. 2. (1997), pp. 179-217.
|
| |
Learning and Instruction, Vol. 17, No. 6. (December 2007), pp. 688-707.
|
| |
Innovative Higher Education, Vol. 32, No. 2. (August 2007), pp. 113-122.
|
| |
British Journal of Educational Technology, Vol. 38, No. 6. (November 2007), pp. 1010-1019.
|
| |
|