97 lines
4.2 KiB
Markdown
97 lines
4.2 KiB
Markdown
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# line of fire lesson
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create a game that relies on precise instincts and timing reflexes #if # #function #data #forever #var #button #if #assignment #pause #string #number #docs
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### @video td/videos/timing-game-0
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## Topic
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Functions
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## Quick Links
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* [tutorial](/microbit/lessons/line-of-fire/tutorial)
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* [quiz](/microbit/lessons/line-of-fire/quiz)
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* [quiz answers](/microbit/lessons/line-of-fire/quiz-answers)
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## Class
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Year 7
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## Prior learning/place of lesson in scheme of work
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Learn how to create **functions**, `function()` that perform a specific task and returns a result. We will be learning how to create a pong game using functions, global variable forever loop, global variables, Boolean, for loop, input on button pressed, if statements, as well as simple commands, such as plot, unplot and pause.
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## Documentation
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* **function** : [read more...](/microbit/js/function)
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* **return** : [read more...](/microbit/js/return)
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* **call** : [read more...](/microbit/js/call)
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* **global variable** : [read more...](/microbit/js/data)
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* **arithmetic operator** : [read more...](/microbit/reference/types/number)
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* **Boolean** : [read more...](/microbit/reference/types/boolean)
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* **forever** : [read more...](/microbit/reference/basic/forever)
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* **on button pressed** : [read more...](/microbit/reference/input/on-button-pressed)
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* **if** : [read more...](/microbit/reference/logic/if)
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* **clear screen** : [read more...](/microbit/reference/basic/clear-screen)
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* **show string** : [read more...](/microbit/reference/basic/show-string)
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* **plot** : [read more...](/microbit/reference/led/plot)
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* **unplot** : [read more...](/microbit/reference/led/unplot)
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* **pause** : [read more...](/microbit/reference/basic/pause)
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## Objectives
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* learn how to create a function as a unit of code that performs a specific task and returns a result
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* learn how a return statement exits a function and returns a value to the code
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* learn how to call an existing function in your script
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* learn how to create a global variable as a place where you can store data so that you can use it later in your code, accessible across functions and in nested code blocks
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* learn how arithmetic operators operate on numbers and return a number
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* learn how a Boolean type has one of two possible values: true or false
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* learn how to repeat code in the background forever
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* learn how to conditionally run code depending on whether a condition is true or not
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* learn how to run code when an input button is pressed
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* learn how to show a string on the micro:bit's LED screen
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* learn how to turn on a LED light on the LED screen. Learn how to specify which LED using x, y coordinates
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* learn how to turn off a LED light on the LED screen. Learn how to specify which LED using x, y coordinates
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* learn how to pause your code for the specified number of milliseconds
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## Progression Pathways / Computational Thinking Framework
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#### Algorithms
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* Designs solutions (algorithms) that use repetition and two-way selection, ie if, then and else.(AL)
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* Uses diagrams to express solutions.(AB)
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* Uses logical reasoning to predict outputs, showing an awareness of inputs (AL)
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* Represents solutions using a structured notation (AL) (AB)
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#### Programming & Development
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* Creates programs that implement algorithms to achieve given goals (AL)
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* Declares and assigns variables(AB)
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* Uses post-tested loop e.g.‘until’,and a sequence of selection statements in programs,including an if,then and else statement(AL)
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* Understands the difference between, and appropriately uses if and if, then and else statements(AL)
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* Uses a variable and relational operators within a loop to govern termination (AL) (GE)
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* Uses a range of operators and expressions e.g. Boolean, and applies them in the context of program control. (AL)
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* Selects the appropriate data types(AL) (AB
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#### Data & Data Representation
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* Defines data types: real numbers and Boolean (AB)
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Computational Thinking Concept: AB = Abstraction; DE = Decomposition; AL = Algorithmic Thinking; EV = Evaluation; GE = Generalisation
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## Activity
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* time: 20 min.
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* [tutorial](/microbit/lessons/line-of-fire/tutorial)
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## Extended Activity
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* time: 20 min.
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* [quiz](/microbit/lessons/line-of-fire/quiz)
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## Homework
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* Extended Activity: [quiz](/microbit/lessons/line-of-fire/quiz)
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