Key learning outcomes for this video:

• To be familiar with different metric units for length, weight and capacity.
• To be able to convert between different units within either length, weight and capacity.
• To be able to estimate using a known measurement.
• To be able to convert between different units of time.

Cue card notes and useful reminders…

• Remember if you are converting from a smaller to a LARGER unit you will DIVIDE and the number will get SMALLER.
• Remember if you are converting from a larger to a SMALLER unit you will MULTIPLY and the number will get BIGGER.
• When estimating an answer to a calculation, round all numbers to 1s.f.
• To convert minutes into a fraction or decimal part of an hour divide by 60.

Measurement and conversions are an important part of Geometry and Measure in GCSE Maths.

Measurement is the process of determining the size, amount, or degree of something. In Geometry and Measure, this typically involves measuring the length, width, or height of objects, as well as measuring angles, areas, and volumes.

Conversions are the process of changing units from one system to another. This is useful when working with measurements in different units, or when comparing measurements across different systems.

For example, let's say we have a rectangle that is 5 cm long and 3 cm wide. To find the area of the rectangle, we would multiply the length by the width:

Area = length x width

Area = 5 cm x 3 cm

Area = 15 cm^2

Note that the unit of area is cm^2 (square centimeters), which means that the measurement represents an area, not a length or a width.

Now, let's say we want to convert the area from cm^2 to m^2 (square meters). To do this, we need to know that 1 m = 100 cm (since there are 100 centimeters in one meter). Therefore, 1 m^2 = (100 cm)^2 = 10,000 cm^2.

To convert 15 cm^2 to m^2, we divide by 10,000:

15 cm^2 ÷ 10,000 = 0.0015 m^2

So the area of the rectangle is 0.0015 m^2.

In GCSE Maths, students will be expected to perform a variety of measurement and conversion tasks. Here are some examples of what they might encounter:

Converting between units: Students may be asked to convert measurements from one unit to another, for example from meters to centimeters or from kilograms to grams. To do this, they will need to know the conversion factors between the units and use them to perform the conversion.

Calculating area and volume: Students will need to be able to calculate the area of 2D shapes (such as rectangles, triangles, and circles) and the volume of 3D shapes (such as cubes, prisms, and cylinders). They will need to know the relevant formulas for each shape and be able to apply them to different situations.

Estimating measurements: Students may be asked to estimate the length, area, or volume of an object based on its dimensions or a given scale. They may also be asked to compare different measurements and estimate which one is larger or smaller.

Solving problems involving measurements: Students will need to be able to use measurements to solve real-world problems, such as calculating the amount of paint needed to cover a room or the cost of materials for a construction project. They will need to be able to interpret measurements and use them to make calculations and decisions.

Overall, students will need to have a good understanding of measurement and conversion concepts, as well as strong mathematical skills in areas such as multiplication, division, and fractions. Practice with different types of measurement and conversion problems can help students develop these skills and prepare for their GCSE Maths exam.