The evidence statements were designed to articulate how students can use the practices to demonstrate their understanding of the DCIs through the lens of the CCCs, and thus, demonstrate proficiency on each PE. The evidence statements do this by clarifying:

o How the three dimensions could be assessed together, rather than in independent units

o The underlying knowledge required for each DCI

o The detailed approaches to science and engineering practices

o How crosscutting concepts might be used to deepen content- and practice-driven learning

From Achieve 2015