Area, perimeter and volume - CPM chapter 9 CC2
    Similar Figures
    Proportional Relationship -  Multiple representations (table, graph, equation, diagram); always goes through the origin -> so y = mx + 0 
    Sample test items with answers - 7th grade 2015 newest edition
    If you do any homework from the CC2 lessons, go to www.cpm.org, textbook resources, pick book CC2, homework help and the correct chapter.