Begin with Basics

Hello Educators!
Think! Mathematics is a new series of Singapore mathematics textbooks that are being developed for use in the United States. We are very proud to be a part of this project and to have the opportunity to work with the wonderful folks at Shing Lee publishers, and our friend and colleague, Dr. Yeap Ban Har.

The Think! Mathematics program is based on Singapore’s 3-Part lesson format; each lesson contains an Anchor Task, Guided Practice, and accompanying Independent Practice in the student workbook. The program has been meticulously aligned to the Common Core State Standards for Mathematics, and the sequence is both logical and developmentally appropriate.

To keep our clients and colleagues informed on the progress of this project, below are some answers to some of the most frequently asked questions we receive about the series. There is also a form to complete if you would like to receive a sample of the books. And as always, you can contact us with any questions you have. 

All the best, 

Bill and Amy


You can download and use these samples in your classroom, and share them with your colleagues. Just click below for instant access!


If your school or district is adopting a new math program and you'd like hard copies or electronic access to all of our books, let's talk! Click below and complete the form!

Frequently Asked Questions

Just give us a call or email us at . We'll walk you through the process and get your books out to you right away!

Currently, grades 1A-3B are available and the publisher is hoping to have grade 4A – 5B available for the school year 2019-2020. The first semester books (4A and 5A) by August, and the second-semester books (4B and 5B) by December. Email us at:

Yes. Once grades 1-5 are released with teacher's guides, a kindergarten book will be developed. This book should be released for the school year 2020-2021.

Below is a list of the books along with their current prices and ISBN numbers. For a more detailed list along with additional related products and resources, download the pricing spreadsheet above located in the downloads section. Email us with any questions or orders:

Think! Mathematics – Pricing and ISBN

Yes! The teacher’s guide is completely digital and will be available on the same schedule as the books. If you would like to view the teacher’s guide please complete the above form and we will create an account for you.

You can speak to us! Please feel free to call us at the number listed at the top of the page. It rings through to our cell phones. We may be teaching, but will call you back within a business day, but most likely before that. You can also use our contact form which sends your message to our personal email inboxes! Email us at: