Lesson Plans

Connect mathematics with American history through an investigation of nineteenth-century cotton production. This teacher-ready lesson engages students in calculating numerical increases, percentage changes, growth factors, and rates while exploring the expansion of the cotton economy and its relationship to slavery.

Includes guided mathematical investigations, historical production estimates, student worksheets, graphing activities, assessments, and answer keys.

Grades 6–8 | Mathematics / Pre-Algebra | 60-Minute Lesson

Bring fractions, ratios, and proportional reasoning to life through a historical investigation of the Three-Fifths Compromise. This teacher-ready lesson guides middle grades students in calculating population representation, comparing mathematical outcomes, and examining how fractions influenced political power.

Includes step-by-step teacher instructions, historical mathematics activities, student worksheets, assessments, and answer keys.

Grades 6–8 | Mathematics / Pre-Algebra | 60-Minute Lesson