Grade 1 – Elementary Math

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 non-standard 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: Two-Dimensional Figures and Patterns	Identifying numbers and quantities Analyzing attributes Identifying patterns	Chapter 1 Student Lesson Activity (LAB) pages Chapter 1 Practice pages Chapter 1 Extension pages Chapter 1 Activity Masters Chapter 1 School-Home Connection Letter (English/Spanish)
Chapter 2: Number Lines and Time	Comparing numbers Understanding addition and subtraction Measuring time	Chapter 2 Student Lesson Activity (LAB) pages Chapter 2 Practice pages Chapter 2 Extension pages Chapter 2 Activity Masters Chapter 2 School-Home Connection Letter (English/Spanish)
Chapter 3: Skip-Counting and Money	Relating pennies and nickels Developing counting strategies Making amounts in different ways Representing coins	Chapter 3 Student Lesson Activity (LAB) pages Chapter 3 Practice pages Chapter 3 Extension pages Chapter 3 Activity Masters Chapter 3 School-Home Connection Letter (English/Spanish)
Chapter 4: Exploring Addition and Subtraction	Sorting and combining in any order Developing addition and subtraction strategies	Chapter 4 Student Lesson Activity (LAB) pages Chapter 4 Practice pages Chapter 4 Extension pages Chapter 4 Activity Masters Chapter 4 School-Home Connection Letter (English/Spanish)
Chapter 5: Working with Tens	Making tens and ones Representing a two-digit number using dimes and pennies Telling time Working with multiples of ten	Chapter 5 Student Lesson Activity (LAB) pages Chapter 5 Practice pages Chapter 5 Extension pages Chapter 5 Activity Masters Chapter 5 School-Home Connection Letter (English/Spanish)
Chapter 6: Data and Probability	Collecting and organizing data Displaying and interpreting data Describing likelihood	Chapter 6 Student Lesson Activity (LAB) pages Chapter 6 Practice pages Chapter 6 Extension pages Chapter 6 Activity Masters Chapter 6 School-Home Connection Letter (English/Spanish)
Chapter 7: Working with Larger Numbers	Identifying patterns and rules Understanding larger numbers Introducing the quarter Finding the values of collections of coins	Chapter 7 Student Lesson Activity (LAB) pages Chapter 7 Practice pages Chapter 7 Extension pages Chapter 7 Activity Masters Chapter 7 School-Home Connection Letter (English/Spanish)
Chapter 8: Doubling, Halving, and Fractions	Doubling and halving as processes Doubling and halving collections of coins Understanding fractions as quantities	Chapter 8 Student Lesson Activity (LAB) pages Chapter 8 Practice pages Chapter 8 Extension pages Chapter 8 Activity Masters Chapter 8 School-Home Connection Letter (English/Spanish)
Chapter 9: Modeling Addition and Subtraction	Modeling and recording addition sentences Applying addition and subtraction rules Relating addition and subtraction	Chapter 9 Student Lesson Activity (LAB) pages Chapter 9 Practice pages Chapter 9 Extension pages Chapter 9 Activity Masters Chapter 9 School-Home Connection Letter (English/Spanish)
Chapter 10: Maps, Grids, and Geometric Figures	Exploring lines and paths Creating two-dimensional spaces Exploring two- and three-dimensional figures	Chapter 10 Student Lesson Activity (LAB) pages Chapter 10 Practice pages Chapter 10 Extension pages Chapter 10 Activity Masters Chapter 10 School-Home Connection Letter (English/Spanish)
Chapter 11: Comparing Numbers, Temperatures, and Weights	Comparing numbers Adding or subtracting equal amounts from both sides of a sentence Using and understanding weight	Chapter 11 Student Lesson Activity (LAB) pages Chapter 11 Practice pages Chapter 11 Extension pages Chapter 11 Activity Masters Chapter 11 School-Home Connection Letter (English/Spanish)
Chapter 12: Length, Area, and Capacity	Measuring to quantify comparisons Using units as cultural conventions Relating the size of a unit to the number of units	Chapter 12 Student Lesson Activity (LAB) pages Chapter 12 Practice pages Chapter 12 Extension pages Chapter 12 Activity Masters Chapter 12 School-Home Connection Letter (English/Spanish)
Chapter 13: Making and Breaking Numbers	Making and breaking numbers Finding sums to 20	Chapter 13 Student Lesson Activity (LAB) pages Chapter 13 Practice pages Chapter 13 Extension pages Chapter 13 Activity Masters Chapter 13 School-Home Connection Letter (English/Spanish)
Chapter 14: Extending Addition and Subtraction	Using strategies to add and subtract Representing number sentences from many situations	Chapter 14 Student Lesson Activity (LAB) pages Chapter 14 Practice pages Chapter 14 Extension pages Chapter 14 Activity Masters Chapter 14 School-Home Connection Letter (English/Spanish)
Chapter 15: Exploring Rules and Patterns	Exploring a variety of rules Identifying inputs and outputs Undoing rules	Chapter 15 Student Lesson Activity (LAB) pages Chapter 15 Practice pages Chapter 15 Extension pages Chapter 15 Activity Masters Chapter 15 School-Home Connection Letter (English/Spanish)