Do your students struggle with units involved with perimeter, area and volume, not knowing when to leave them alone, square or cube them? If so, this will be a great source for you!
It breaks down the three basic concepts of perimeter (1D), area (2D) & volume (3D) to help students understand what is being represented and what should happen to their units as well.
It also helps students relate area formulas to volume formulas to make better sense of why we use those formulas to calculate volume of similar shapes.
The last page requires higher level thinking that will challenge your students to make those connections between the 2D and 3D and make sense of their learning.