Overview
Think Math! is founded upon the principle that children are curious problem solvers. Each grade level’s content builds a puzzler’s disposition, developing mathematical “habits of mind” through games, puzzles, mental math, and other collaborative activities – with the goal of providing engaging and motivating experiences for a community of diverse learners.
In Think Math!, first graders are eager to explore mathematical relationships. They sort and classify by attributes and explain sorting rules. They represent addition and subtraction as jumps on a number line, understanding that a “plus” jump moves forwards and a “minus” jump moves backwards. Instruction focuses on strategies for addition and subtraction within 20, including doubling, halving numbers, and making pairs to 10 and 20 – eventually moving to larger numbers up to 120 by exploring place value and grouping. They experiment with linear measurement using both nonstandard and standard units of measure to measure various objects.
All student materials can be accessed through the table below as PDFs by chapter.
Chapter Listing
Chapter  Topics  Think Math Resources 

Chapter 1: TwoDimensional Figures and Patterns 

Chapter 1 Student Lesson Activity (LAB) pages Chapter 1 Practice pages Chapter 1 Extension pages Chapter 1 Activity Masters 
Chapter 2: Number Lines and Time 

Chapter 2 Student Lesson Activity (LAB) pages Chapter 2 Practice pages Chapter 2 Extension pages Chapter 2 Activity Masters 
Chapter 3: SkipCounting and Money 

Chapter 3 Student Lesson Activity (LAB) pages Chapter 3 Practice pages Chapter 3 Extension pages Chapter 3 Activity Masters 
Chapter 4: Exploring Addition and Subtraction 

Chapter 4 Student Lesson Activity (LAB) pages Chapter 4 Practice pages Chapter 4 Extension pages Chapter 4 Activity Masters 
Chapter 5: Working with Tens 

Chapter 5 Student Lesson Activity (LAB) pages Chapter 5 Practice pages Chapter 5 Extension pages Chapter 5 Activity Masters 
Chapter 6: Data and Probability 

Chapter 6 Student Lesson Activity (LAB) pages Chapter 6 Practice pages Chapter 6 Extension pages Chapter 6 Activity Masters 
Chapter 7: Working with Larger Numbers 

Chapter 7 Student Lesson Activity (LAB) pages Chapter 7 Practice pages Chapter 7 Extension pages Chapter 7 Activity Masters 
Chapter 8: Doubling, Halving, and Fractions 

Chapter 8 Student Lesson Activity (LAB) pages Chapter 8 Practice pages Chapter 8 Extension pages Chapter 8 Activity Masters 
Chapter 9: Modeling Addition and Subtraction 

Chapter 9 Student Lesson Activity (LAB) pages Chapter 9 Practice pages Chapter 9 Extension pages Chapter 9 Activity Masters 
Chapter 10: Maps, Grids, and Geometric Figures 

Chapter 10 Student Lesson Activity (LAB) pages Chapter 10 Practice pages Chapter 10 Extension pages Chapter 10 Activity Masters 
Chapter 11: Comparing Numbers, Temperatures, and Weights 

Chapter 11 Student Lesson Activity (LAB) pages Chapter 11 Practice pages Chapter 11 Extension pages Chapter 11 Activity Masters 
Chapter 12: Length, Area, and Capacity 

Chapter 12 Student Lesson Activity (LAB) pages Chapter 12 Practice pages Chapter 12 Extension pages Chapter 12 Activity Masters 
Chapter 13: Making and Breaking Numbers 

Chapter 13 Student Lesson Activity (LAB) pages Chapter 13 Practice pages Chapter 13 Extension pages Chapter 13 Activity Masters 
Chapter 14: Extending Addition and Subtraction 

Chapter 14 Student Lesson Activity (LAB) pages Chapter 14 Practice pages Chapter 14 Extension pages Chapter 14 Activity Masters 
Chapter 15: Exploring Rules and Patterns 

Chapter 15 Student Lesson Activity (LAB) pages Chapter 15 Practice pages Chapter 15 Extension pages Chapter 15 Activity Masters 