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NUMBERS ABOVE 100

DAY 4

Modelling Numbers Using Base 10 Arrangements 

Key Mathematical Ideas

  • Model numbers beyond 100 on the Linear Abacus®.

  • Understand the scale of the base 10 groups.

  • Use an arithmetic description to describe models of numbers beyond 100.

Exploration

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Model the numeral 148 using a base 10 arrangement on the Linear Abacus®. Remember the rule:

 

Whenever ten individual beads or ten groups of ten beads are counted, they form a new group.

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Share their creative thinking on our Mathematics Community Forum

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Support

Describe first what you see on the model- think about how to use colour to help you talk about the base 10 groups.​

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Extension

Ask children to represent a three-digit number of their choice and explain their model to a partner/family member.

Micro Writing Task

Complete day 4 of your journal. For parents and teachers this prompt encourages children to apply and extend what they have learned in previous lessons. The dialogue that the child engages in is a basic "to and fro" between mathematical ideas.

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