Proportional reasoning and rule‐governed behavior with the balance beam

This publication has 4 references indexed in Scilit:

• Development of time, speed, and distance concepts.
  Developmental Psychology, 1979
• The development and validation of a classroom test of formal reasoning
  Journal of Research in Science Teaching, 1978
• Three aspects of cognitive development
  Cognitive Psychology, 1976
• The growth of logical thinking: From childhood to adolescence.
  Published by American Psychological Association (APA) ,1958