Learn more about Investigations 3 at Grade 1

  • Read Unit Summaries and learn about the pacing of the Grade 1 units.
  • Read a sample Session focused on representing and combining 2-digit numbers, and thinking about the number of tens, and discussing what happens when you add a 2-digit and a 1-digit number that, between them, have more than 9 ones. See the Assessment Checklist used in the Session.
  • Read a description of the Mathematics in Grade 1.
  • Review the Grade 1 Scope and Sequence.
  • View correlations between the Grade 1 curriculum and the Common Core Standards at Grade 1.
  • Peek into a classroom: watch video of first graders at work on mathematics.