Second and fifth graders’ use of knowledge-pieces and knowledge-structures when solving integer addition problems
Second and fifth graders’ use of knowledge-pieces and knowledge-structures when solving integer addition problems
<p xmlns="http://www.ncbi.nlm.nih.gov/JATS1">In this study, we explored second and fifth graders’ noticing of negative signs and incorporation of them into their strategies when solving integer addition problems. Fifty-one out of 102 second graders and 90 out of 102 fifth graders read or used negative signs at least once across the 11 …