The developing efficient numeracy strategies (DENS) resources provide teachers with ideas and activities to support the teaching and learning of numeracy.

Developing Efficient Numeracy Strategies Part 1 contains a large range of activities designed to build upon students' current methods of solving arithmetical problems. The activities support and encourage students to use efficient strategies when completing tasks.

Part 2 is divided into three booklets containing activities based on increasingly efficient counting and grouping strategies:

• Counting by ones – tasks to assist students develop strategies beyond counting-based strategies.
• Forming groups – exercises for students who no longer rely on counting-by-ones strategies and are able to apply a range of grouping strategies to solve problems.
• Coordinating groups – activities to develop students' use of collection-based strategies to solve problems.