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# glowing pendulum blocks lesson
construct a pendulum that glows using acceleration #var #acceleration #abs #brightness #plot #docs
## Topic
Acceleration
## Quick Links
* [activity](/microbit/lessons/glowing-pendulum/activity)
* [challenges](/microbit/lessons/glowing-pendulum/challenges)
## Class
Year 7
## Prior learning/place of lesson in scheme of work
Learn how to get the acceleration **acceleration**, `acceleration` value (g-force), in one of three specified dimensions. We will be learning how to get the acceleration using forever loop, a local variable, acceleration, the math library, as well as simple commands, such as led set brightness and led plot all.
## Documentation
* **forever** : [read more...](/microbit/reference/basic/forever)
* **local variable** : [read more...](/microbit/reference/variables/var)
* **acceleration** : [read more...](/microbit/reference/input/acceleration)
* **absolute value** : [read more...](/microbit/js/math)
* **set brightness** : [read more...](/microbit/reference/led/set-brightness)
* **show LEDs** : [read more...](/microbit/reference/basic/show-leds)
## Objectives
* learn how to repeat code in the background forever
* learn how create a local variable to store data, so that you can use it in your code
* learn how to get the acceleration value (g-force), in one of three specified dimensions
* learn how to return the absolute value
* learn how to sets the brightness of the LED screen
* learn how to turn on all the LED lights on the LED screen
## Progression Pathways / Computational Thinking Framework
#### Algorithms
* Uses diagrams to express solutions.(AB)
* Uses logical reasoning to predict outputs, showing an awareness of inputs (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)
* Uses a variable and relational operators within a loop to govern termination (AL) (GE)
* Selects the appropriate data types(AL) (AB
#### Data & Data Representation
* Understands the difference between data and information(AB)
* Uses filters or can perform single criteria searches for information.(AL)
#### Hardware & Processing
* Knows that computers collect data from various input devices, including sensors and application software (AB)
#### 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](/microbit/lessons/glowing-pendulum/activity)
## Extended Activity
* time: 20 min.
* [challenges](/microbit/lessons/glowing-pendulum/challenges)
## Homework
* Extended Activity: [challenges](/microbit/lessons/glowing-pendulum/challenges)