think! Mathematics Singapore Edition 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 Eleven Addition & Subtraction Within 100
Chapter Twelve Numbers to 100
Chapter Thirteen Addition & Subtraction Within 100
Chapter Fourteen Length & Height
Chapter Fifteen Multiplication
Chapter Sixteen Division
Chapter Seventeen Time
Chapter Eighteen Money
Chapter Ninteen Picutre Graphs
Chapter Twenty Story Problems