Pt1420 Unit 4

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Pages: 5

UIntroduction

After completing this learning unit, the learner will be able to measure, estimate and calculate physical quantities and explore, describe and represent geometrical relationships in 2-dimensions in different life or workplace contexts, by successfully completing the following:

1. Estimate, measure and calculate physical quantities to solve problems in practical situations
2. Explore transformations of two-dimensional geometric figures

We will also be exploring some important concepts, such as:

• Properties of geometric shapes
• Length, area, mass, temperature, time
• Scale drawing

2.1 Estimate, measure and calculate physical quantities to solve problems in practical situations
Knowing how to measure length, weight,
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The scale on the left can measure weight between 0 and 2 kg in weight. The units are divided into kilograms and grams. Scales for measuring larger quantities of food (like vegetables or fruit) are sometimes seen in shops or at markets. The scale on the left can measure weight from 0 to 10 kg. Bathroom scales can be analogue or digital (like the scale on the left). They are used to measure a person's weight, and can measure weight from 0 to 150 kg. Bathroom scales usually show units in kilograms and grams - e.g. 63,6 kg. Clinics and doctors' practices often use larger analogue scales to measure a person's weight. These can also measure weight between 0 and 150 kg. Flat electronic scales, called platform scales, can be used to measure bulky objects like suitcases (at the airport) or dogs (at the vet). Weighbridges are used to measure very large objects like trucks. The truck drives onto a special strip of road that is connected to a digital scale. The scale operator (shown in the picture on the left) then reads off the truck's weight in tonnes.

Information
Analogue scale - A scale that has no electronic devices attached to it, (e.g. LCD