Dewch i Feddwl Mathemateg (9 i 11 oed) Gwers 1 Cyfrif Cartwn

Introduction

Introduction
This activity explores place value as a number-writing convention appropriate for use by people. Children look at our base 10 convention as one convenient to the 10 fingers of two hands, then experiment with base 8 convention in cartoon-land. As an extension they look at the binary system, the basis for the digital age. They represent different amounts using the three systems and compare their efficiency in describing numbers.
Episode 1:
Starting with the ease of recognising numbers shown on fingers on our two hands, children explore representing numbers with a system of base 8, using four fingered hands. They discuss the difficulties in representing numbers using this system.
Episode 2:
The children represent numbers using both base 10 and base 8 systems. They compare the two number systems.
Episode 3:
The children explore representing numbers using a binary system.
Reflection
The children compare the three systems.
Aims
• Children understand that numbers can be represented in different ways
• Children develop their knowledge of place value systems
Materials
Supplied

  • Resource Sheet A showing numbers one to ten in base 10 and base 8
  • Resource Sheet B showing representations of numbers in base 8
  • Resource Sheet C showing different amounts of objects
  • Before you teach
    Photocopy Resource Sheets A (one per pair), B (around four per group) and C (one per pair)
    Vocabulary
    Numbers, amount

    License

    Gwersi PCAME a Dewch i Feddwl Mathemateg (9 i 11 oed) Copyright © by Ann Longfield, David Johnson, Jean Hindshaw, Linda Harvey, Jeremy Hodgen, Michael Shayer, Mundher Adhami, Rosemary Hafeez, Matt Davidson, Sally Dubben, Lynda Maple, and Sarah Seleznyov. All Rights Reserved.

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