Charan Langton

• Big words for little kids
• The Reading Lesson with CD-ROM
• The verbal math lesson
• The verbal math lesson
• Verbal Fractions
• Verbal Math Lesson Book 2
• ABC Writing Lesson
• Digital Communication Systems
• Intuitive Guide to Fourier Transform and the Spectrum
• Join a club
• Leccion de Mathematica Verbal 1
• The Reading Lesson - Spiral form