Think! Mathematic Primary Singapore Edition Workbook 1A is a series of textbooks and workbooks written to meet the requirements for Singapore's latest curriculum.  Written in accordance with extensively researched approaches used in Singapore, it adopts a spiral design with the integration of the concrete-pictorial-abstract (C-P-A) approach, careful variation and the use of problem solving, which are integral features of the learning process. 
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Based on time-tested learning theories, this series incorporates the use of concrete manipulatives and group work.  In think! mathematics Singapore Edition, these features are exemplified throughout the series.
 
Chapter One Numbers to 10
Chapter Two Number Bonds
Chapter Three Addition Within 10
Chapter Four Subtraction Within 10
Chapter Five Ordinal Numbers
Chapter Six Numbers to 20
Chapter Seven Addition & Subtraction Within 20
Chapter Eight Length & Height
Chapter Nine Shapes
Chapter Ten Numbers to 40