The majority of the Direct Instruction programs (big "D", big "I") are published by McGraw-Hill Education (previously SRA). With few exceptions, the DI programs that ADI supports and endorses feature Siegfried "Zig" Engelmann as the senior author. 

K-12 Programs by Subject

A complete list of programs we support can be found here

DI Programs for Home Use

• Teach Your Child to Read in 100 Easy Lessons
• Funnix Beginning Reading
• Funnix Beginning Math

Textbooks for Higher Ed

• Introduction to Direct Instruction
• Direct Instruction Reading (5th Edition)  
• Teaching Struggling and At-Rist Readers: A Direct Instruction Approach
• Designing Effective Mathematics Instruction: A Direct Instruction Approach (4th Edition)

Research on Direct Instruction Programs

• Research Studies found in the Journal of Direct Instruction
• Direct Instruction Research Database

Other Information

• Comprehensive Collection of DI Resouces
• A Bibliography of Direct Instruction Curriculum and Studies Examining Its Efficacy