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...working code is valued above other types of artefact, such as models or other documentation. Extreme Programming (XP) (Beck, 2000) and Scrum (Schwaber and Beedle, 2001) are two well-known Agile development approaches. Within the same timescale of Agile development, model-driven-development (Selic, 2003) also arose. This approach sees models and not code as the key...

...working out what calculation you want to do; Stage 2: working out roughly what size of answer to expect from your calculation; Stage 3: carrying out the calculation; Stage 4: interpreting the answer – Does it agree with the rough estimate? Does it make sense in terms of the original problem? This course focuses on Stages 2 and 4. This OpenLearn course provides a sample...

...working in ‘Math’ mode, and the word Math will be shown near the right-hand side of the top of the calculator display, as shown in Figure 4 below. Math mode is the recommended way of using your calculator during this course as it allows mathematics to be entered and displayed in a similar way to how you would write it on paper. [The figure shows the display on a...

...work and why this is important to our choice of drinks, and go in search of the best hangover cure. The Open University would really appreciate a few minutes of your time to tell us about yourself and your expectations for the course before you begin, in our optional start-of-course survey. Once you complete the course we would also value your feedback and suggestions for...

...work with a diagram length of 1 cm. As 2 cm represent 1 m, 1 cm will represent 0.5 m. Then 6 cm represent 0.5 × 6 m = 3 m, 0.2 cm represent 0.5 × 0.2 m = 0.1 m, 3 cm represent 0.5 × 3 m = 1.5 m, 3.6 cm represent 0.5 × 3.6 m = 1.8 m, 0.5 cm represent 0.5 × 0.5 m = 0.25 m. (b) Here 1 m in reality is represented by 2 cm on the diagram. So 2.3 m are represented by 2.3 ×...