Components

Each grade is made up of 8 curriculum units, an Implementation Guide, and a Content Guide. Also available for teachers: a Spanish Companion and an Assessment Sourcebook specific to the grade. Each classroom needs the manipulatives and cards used in that grade, and one Student Activity Book per student. The curriculum can be taught without access to technology, entirely digitally, or using a blended approach.

Features of The Curriculum
Take a Tour of a Unit (Grade 2, Unit 5)
Take a Tour of an E-text (Grade 4, Unit 1)
Take a Tour of the Digital Components (Grade 4)

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Overview
A Sample Session
About The Math
Investigations in the Kindergarten Classroom

This teacher introduces the class to a new kind of problem: How Many of Each?

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Overview
A Sample Session
  • This session focuses on representing and combining 2-digit numbers, and thinking about the number of tens.
  • Review the Assessment Checklist referenced in the session.
About The Math
Investigations in the Grade 1 Classroom

One student discusses her strategy for solving a story problem (18 + _ = 25) with her teacher.

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Overview
A Sample Session
  • This session focuses on representing 3-digit numbers as hundreds, tens, and ones.
  • Review the  Teacher Note referenced in the session.
About The Math
Investigations in the Grade 2 Classroom

One student shares his strategy for solving 69 + 87.

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Overview
A Sample Session
  • This session focuses on locating and comparing fractions on number lines.
  • Review the Teacher Note referenced in the session.
About The Math
Investigations in the Grade 3 Classroom

Students discuss ways they might use their “plus/minus rule” to add 623 + 249.

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Overview
A Sample Session
About The Math
Investigations in the Grade 4 Classroom

Students compare two strategies for solving 145 + 226, one of which is the US standard algorithm.

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Overview
A Sample Session
About The Math
Investigations in the Grade 5 Classroom

Students choose which of three estimates is the closest estimate for a given multiplication or division problem, and explain their thinking.

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