I brought Bar Modelling, its really helped me understand a lot in using model concept to teach my child.

There is a series by Marshall, noticed it was collaborated with MOE. I saw it at recent book fair called English P3. Heard some schools are using now. They even have booklets, grammar handbook and workbook.

Maths assessment, try out Visible Thinking by Ammie Wan.

No textbook gave me a hard time till my child teacher recommended worksheets available now for P3 English. Series called "Companion Booklets", some schools are using now. Teacher also introduce new text & workbook which was collaborated with Stellar, known as Marshall Cavendish English.