Breakthroughs in Social Studies sharpens critical-thinking skills for social studies! Pre- and Post-Tests: Accurately diagnose skill levels and assess mastery. Evaluation Charts: Correlated to the chapters to help identify areas for additional study and practice. Answer Keys: Allow students to check their own work for immediate feedback. Breakthroughs in Social Studies features: Critical thinking, social studies concepts, and the interpretation of charts, graphs, maps, and political cartoons.