The package includes 10 activities about teen numbers and teacher notes and is designed for both PC and iPad.  Teen numbers are an important part of early place value, which is built on being able to:

  • Count on or back from any starting number.
  • Skip count in 2s, 5s and 10s as a result of unitising (spotting equal-sized groups).
  • Using the additive property of place value, such as 14 is 10 + 4.
  • Using friendly numbers.

Being able to combine and deconstruct numbers flexibly is central to number sense at this level.

Hidden Numbers supports the teaching of the ACM Number and Place Value strand for Year 1: ACMNA012.

 

  • Description

    The package includes 10 activities about teen numbers and teacher notes and is designed for both PC and iPad.  Teen numbers are an important part of early place value, which is built on being able to:

    • Count on or back from any starting number.
    • Skip count in 2s, 5s and 10s as a result of unitising (spotting equal-sized groups).
    • Using the additive property of place value, such as 14 is 10 + 4.
    • Using friendly numbers.

    Being able to combine and deconstruct numbers flexibly is central to number sense at this level.

  • Australian Curriculum Links

    Hidden Numbers supports the teaching of the ACM Number and Place Value strand for Year 1: ACMNA012.

     

  • Sample Activity

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