ORIGO Big Book – Year 1: Addtron – Addtron |

Addtron introduces the strategy of doubling to add. From this introduction, students use concrete materials and pictorial representations to add doubles and near doubles.

These whole-class activities provide students with the opportunity to:

• listen to a story about doubling to add
• use materials to act out the story
• use the Teaching Tool to act out the story
• use concrete and pictorial materials to make and add doubles
• use the Teaching Tools to match double number facts with double displays
• use pictorial materials to sort and add doubles and near doubles1 BB Addtron