Activities in this teaching pack include a set of cards to select different numbers to twenty to use when identifying matching pairs of number bonds and templates to use concrete objects to identify and record addition and subtraction calculations that can make sums to twenty.

The interactive presentation gets the children to explore how to use concrete objects to identify and record addition and subtraction calculations that can make sums of autumn leaves to twenty.

This lesson is part of a maths scheme of work to get the children to investigate and model how to use mental calculation techniques when working with concrete objects and diagrams to identify pairs of numbers that make sums to twenty. There are teaching activities for shared learning, differentiated worksheets to support independent learning and interactive presentations to introduce concepts and key skills.