add and subtract numbers within 20, using physical and virtual materials, part-part-whole knowledge to 10 and a variety of calculation strategies

How Bloomi helps with this

This is a readiness-year topic that builds towards the next NAPLAN year. Bloomi practises it as curriculum mastery, never test drilling.

What this looks like in the classroom

• using drawings, physical and virtual materials and number combinations within \(10\) to add and subtract collections to \(20\)
• adding and subtracting numbers within \(20\), using a variety of representations and strategies such as counting on, counting back, partitioning and part-part-whole knowledge of numbers to \(10\); for example, using partitioning and combining \(7+5=7+3+2=10+2=12\)
• developing and using strategies for one-digit addition and subtraction based on part-part-whole relationships for each of the numbers to \(10\) and subitising with physical and virtual materials; for example, \(8\) and \(6\) is the same as \(8\) and \(2\) and \(4\)