Students may need help with the 5th grade Brain Teaser, which asks for orthographic drawings (but does not introduce the term). Here is a separate lesson you can provide as a supplement to MPACT to help students get a solid grasp on orthographic drawings (or projections).
Scott Kim, puzzle master, has created lovely activities for exploring symmetry, math, and art. Several activities are appropriate for MPACT students. Great animations provide easy access to complicated activities. Classroom-ready materials.