AC9M2A01 Year 2 Mathematics

Content descriptor recognise, describe and create additive patterns that increase or decrease by a constant amount, using numbers, shapes and objects, and identify missing elements in the pattern

Elaborations

• • Elaboration creating a pattern sequence with materials, writing the associated number sequence, and then describing the sequence so someone else can replicate it with different materials; for example, using matchsticks or toothpicks to create a growing pattern of triangles using 3 for one triangle, 5 for 2 triangles, 7 for 3 triangles and describing the pattern as “Start with 3 and add 2 each time”
• • Elaboration recognising patterns in the built environment to locate additive pattern sequences; for example, “How many windows in one train carriage, 2 train carriages, 3 train carriages …?” or “How many wheels on one car, 2 cars, 3 cars…?” and recording the results in a diagram or table
• • Elaboration recognising the constant term being added or subtracted in an additive pattern and using it to identify missing elements in the sequence
• • Elaboration using dynamic geometric software or a generative artificial intelligence tool to create patterns that increase or decrease by a constant amount; for example, creating a geometric pattern using shapes, that adds the same number of elements to the pattern as the pattern increases, and discussing what instructions they input to achieve the output
• • Elaboration recognising additive patterns in the environment on Country/Place and in First Nations Australians’ material culture; representing them using drawings, coloured counters and numbers