pxt-calliope/docs/reference/js/lessons/snowflake-fall.md
2016-04-01 16:22:47 -07:00

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# snowflake fall lesson
design a blinking rectangle animation.
### @video td/videos/snowflake-fall-0
## Topic
Show Animation
## Quick Links
* [activity](/microbit/lessons/snowflake-fall/activity)
* [quiz](/microbit/lessons/snowflake-fall/quiz)
* [quiz answers](/microbit/lessons/snowflake-fall/quiz-answers)
* [challenges](/microbit/lessons/snowflake-fall/challenges)
* [tutorial](/microbit/lessons/snowflake-fall/tutorial)
## Class
Year 7
## Prior learning/place of lesson in scheme of work
Learn how to create **animation**, `basic->show animation` to display an animated image. We will be learning how to create an animated image using forever loop as well as simple commands, such as show animation.
## Documentation
* **show animation** : [read more...](/microbit/reference/basic/show-animation)
* **forever** : [read more...](/microbit/reference/basic/forever)
## Objectives
* learn how to show a series of image frames on the LED screen, pausing the specified time after each frame
* learn how to repeat code in the background forever
## Progression Pathways / Computational Thinking Framework
#### Algorithms
* Uses diagrams to express solutions.(AB)
* Represents solutions using a structured notation (AL) (AB)
* Can identify similarities and differences in situations and can use these to solve problems (pattern recognition)(GE)
#### Programming & Development
* Creates programs that implement algorithms to achieve given goals (AL)
#### 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)
Computational Thinking Concept: AB = Abstraction; DE = Decomposition; AL = Algorithmic Thinking; EV = Evaluation; GE = Generalisation
## Activity
* time: 20 min.
* [activity](/microbit/lessons/snowflake-fall/activity)
* [quiz](/microbit/lessons/snowflake-fall/quiz)
## Extended Activity
* time: 20 min.
* [challenges](/microbit/lessons/snowflake-fall/challenges)
## Homework
* Extended Activity: [challenges](/microbit/lessons/snowflake-fall/challenges)