## Hidden number - Bailey : Grade Commentary

### Other Work Samples for:

Bailey has demonstrated extensive knowledge and understanding of number skills and problem-solving skills. The missing number has been accurately identified and six mathematical methods have been used to determine the answer. Although Bailey has not used diagonal number patterns, there is evidence of a very high level of competence in the complex reasoning provided and the use of mathematical symbols and language. This work sample demonstrates characteristics of work typically produced by a student performing at grade A standard at the end of Stage 1.

The student has an extensive knowledge and understanding of the content and can readily apply this knowledge. In addition, the student has achieved a very high level of competence in the processes and skills and can apply these skills to new situations.

## Foundation Statement strands

The following strands are covered in this activity:

• Working Mathematically
Students ask questions and use objects, diagrams and technology to explore mathematical problems. They link mathematical ideas and use everyday language, some mathematical language and diagrams to explain how answers were obtained.
• Number
Students count, order, read and write numbers up to 999 and use a range of mental strategies, informal recording methods and materials to add, subtract, multiply and divide. They model and describe objects and collections divided into halves and quarters. Students sort, order and count money and recognise and describe the element of chance in familiar activities.
• Patterns and Algebra
Students describe, create and continue a variety of number patterns and relate addition and subtraction facts to at least 20.