Prize Essay ... Religious Knowledge Among the Poor, Not Less Important in 1850 Than in 1750 [By J. Blackburn]

Science Vocabulary Building, Grades 3 - 5

Mark Twain - Developing Science Writing Skills, Grades 5 - 8

Mark Twain - Math Skills Mind Benders, Grades 6 - 12

Mark Twain Meteorology Science Workbook, Middle School Books Covering Atmosphere and Weather With Inquiry Investigations, Classroom or Homeschool Curriculum (Expanding Science Skills Series)

Mark Twain Astronomy Book, Middle and High School Earth and Space Science Workbook Covering Our Solar System and Beyond, Classroom or Homeschool Curriculum (Expanding Science Skills Series)

Mark Twain Chemistry Workbook, Science Book for Grades 5 and Up, Physical and Chemical Changes in Matter, Scientific Experiments, and More, Classroom ... Curriculum (Expanding Science Skills Series)

Fractions & Decimals, Grades 4 - 8: Easy Review for the Struggling Student (Math Tutor Series)

Math Games, Grades 7 & 8