pxt-calliope/docs/reference/js/lessons/magic-8.md
2016-04-13 08:27:45 -07:00

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# magic 8 lesson
a fortune teller game with the BBC micro:bit.
### @video td/videos/magic-8-1
## Topic
If (Conditionals)
## Quick Links
* [activity](/lessons/magic-8/activity)
* [quiz](/lessons/magic-8/quiz)
* [quiz answers](/lessons/magic-8/quiz-answers)
* [challenges](/lessons/magic-8/challenges)
* [tutorial](/lessons/magic-8/tutorial)
## Class
Year 7
## Prior learning/place of lesson in scheme of work
Learn how to creating **conditionals**, `if condition do` to conditionally run code depending on whether a condition is true or not. We will be learning how to create a fortune telling app using local variable and conditionals (If), input on shake as well as simple commands, such as show string, show number, and clear screen.
## Documentation
* **show string** : [read more...](/reference/basic/show-string)
* **show number** : [read more...](/reference/basic/show-number)
* **on shake** : [read more...](/reference/input/on-gesture)
* **clear screen** : [read more...](/reference/basic/clear-screen)
* **local variable** : [read more...](/reference/variables/var)
* **random number** : [read more...](/js/math)
* **if** : [read more...](/reference/logic/if)
## Objectives
* learn how to show a string on the LED screen
* learn how to show a number on the LED screen
* learn how to learn how to turn off all the LED lights on the LED screen
* learn how to use the input on shake
* learn how to learn how to create a local variable to store data so that you can use it later in your code
* learn how to learn how to return a random number
* learn how to learn how to conditionally run code depending on whether a condition is true or not
## Progression Pathways / Computational Thinking Framework
#### Algorithms
* Designs solutions (algorithms) that use repetition and two-way selection, ie if, then and else.(AL)
* Uses diagrams to express solutions.(AB)
* Recognises that different solutions exist for the same problem (AL) (AB) Understands that iteration is the repetition of a process such as a loop (AL)
* Represents solutions using a structured notation (AL) (AB)
#### Programming & Development
* Creates programs that implement algorithms to achieve given goals (AL)
* Declares and assigns variables(AB)
* Understands the difference between, and appropriately uses if and if, then and else statements(AL)
* Uses a variable and relational operators within a loop to govern termination (AL) (GE)
* Uses a range of operators and expressions e.g. Boolean, and applies them in the context of program control. (AL)
* Selects the appropriate data types(AL) (AB
#### Data & Data Representation
* Understands the difference between data and information(AB)
* Performs more complex searches for information e.g. using Boolean and relational operators(AL) (GE) (EV)
* Defines data types: real numbers and Boolean (AB)
#### Hardware & Processing
* Knows that computers collect data from various input devices, including sensors and application software (AB)
#### Communication Networks
* Demonstrates responsible use of technologies and online services, and knows a range of ways to report concerns Understands how search engines rank search results (AL)
#### Information Technology
* Collects, organizes, and presents data and information in digital content (AB)
* Makes appropriate improvements to solutions based on feedback received, and can comment on the success of the solution (EV)
* Recognises ethical issues surrounding the application of information technology beyond school.
Computational Thinking Concept: AB = Abstraction; DE = Decomposition; AL = Algorithmic Thinking; EV = Evaluation; GE = Generalisation
## Activity
* time: 20 min.
* [activity](/lessons/magic-8/activity)
* [tutorial](/lessons/magic-8/tutorial)
* [quiz](/lessons/magic-8/quiz)
## Extended Activity
* time: 20 min.
* [challenges](/lessons/magic-8/challenges)
## Homework
* Extended Activity: [challenges](/lessons/magic-8/challenges)