These two threw me for a loop when we were in class. When we were shown "yes" and "no" examples and had to figure out what the concept was, I was so confused! My brain had never worked like that before. But I realized, that's high order thinking! We were given pieces of the puzzle and had to figure it out for ourselves. This is essentially what concept attainment is. Students are given yes or no examples and they have to group them into categories. From there they try to figure out the bigger picture.
Concept development is a little different. Students start with a bigger concept and they have to make it smaller. They're given a broader topic and need to give examples, or better specify, said topic. Students then group the examples and explain their thought process along the way.
