Mark and I reviewed MOD functions and other excel related functions. Graphs projections and the like. His ability to understand spread sheets without prior knowledge of the inputs was very impressive.
My daughter is at a school with a nutty mod program, which means that the kids have to cover major topic areas in 5 week 'sprints'. My daughter really benefited from Linda spending time with her, patiently connecting dots in what she had been learning and working problems. My daughter has had immediate results in how she's doing, but MOST importantly is confidently mastering the subject matter.
Discrete math on partial order relations. We went over determining if a relation was reflexive, symmetric, antisymmetric and transitive. He gave good feed back about congruence relations and mod operator.