1. Have you ever paused to think about how many things we pick up and carry around with us every day? You can say whether something is heavy or light, but have you ever wondered what the mass of a particular article is, that you are carrying? Let us look at a couple of examples. Complete the following table. First estimate and then determine the exact mass. Use a kitchen scale!

Item | Mass in gram | |

Estimated | Measured | |

1.1 tin of cool drink | _____________________ | _____________________ |

1.2 hairbrush | _____________________ | _____________________ |

1.3 pencil box | _____________________ | _____________________ |

1.4 Mathematics book | _____________________ | _____________________ |

*Learning Outcome 4: *The learner will be able to use appropriate measuring units, instruments and formulae in a variety of contexts.

*Assessment Standard 4.6:* We know this when the learner uses appropriate measuring instruments (with understanding of their limitations) to appropriate levels of precision including:

**4.6.1: **bathroom scales, kitchen scales and balances to measure mass.