Research and Validity


  • Program Philosophy
    • Investigations in Number, Data, and Space, Second Edition PDF Icon
  • Research Articles
    • Assessing Elementary Understanding of Multiplication Concepts PDF Icon
    • The Investigations Curriculum and Children’s Understanding of Whole Number Operations PDF Icon
  • Scientific Research Base PDF Icon
  • Formative Research PDF Icon
  • Summative Research PDF Icon
  • Latest Research Release PDF Icon