Grade 1 Curriculum


Learn more (pdf) about the units, the math, the components, and some of the games, activities, and contexts at first grade.

Math Content

Unit Summaries contains a brief summary of the mathematical content of each of the units in the Grade 1 sequence.

Math Content by Grade describes the mathematical work of Grade 1 in each of the following content areas: Counting and the Number System and Addition and Subtraction (both listed under Number and Operations-Whole Numbers), Data Analysis, Measurement, Patterns and Functions, and Geometry. The mathematical emphases and benchmarks for each content area are also included.

Scope and Sequence contains the mathematical emphases, math focus points, and assessed benchmarks for each of the units in the Grade 1 sequence.

Sample Sessions

Explore a Session from the third Grade 1 unit, Solving Story Problems: Addition, Subtraction, and the Number System 2. All of the materials referenced in the Session—Resource Masters, Student Activity Book pages, Student Math Handbook pages, two Teacher Notes, and a Dialogue Box—are also included.

Grade 1 Components

Learn about the various components that make up the Core Curriculum Package in Grade 1, including: materials available in Spanish; materials included in the Manipulatives Kit, the Completer Kit, and the Cards Package at Grade 1; and additional, optional resources.

Classroom Cases

Learn more about companion materials for using Investigations to teach the Common Core State Standards.


This document lists the Grade 1 units, the number of sessions in each one, and the total number of sessions in the Grade 1 curriculum. It also contains information about the expectations for the number of minutes spent per day on mathematics.

Investigations and the CCSS

Learn more about Investigations and the Common Core State Standards at first grade. The sample Session, How Many Cubes?, is one of several Sessions that focus on the place value of two-digit numbers. It is designed to be incorporated at the end of the eighth Grade 1 unit, Twos, Fives, and Tens: Addition, Subtraction, and the Number System 4. The instructional plans layout Session-by-Session changes to each Investigation in that unit.

Classroom Video

What does an Investigations classroom look and sound like? The videos below provide images of teachers and students at work in a range of first grade classrooms.

This teacher re-introduces students to the Classroom Routine Quick Images. Several students share how they visualized one image.

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

One student shares his strategy for solving 8 + 5. The teacher records his thinking.

One student shares her strategy for solving 6 + 7. Another student shares a similar, related strategy. The teacher records their thinking.