pxt-calliope/docs/reference/js/lessons/looper/lesson.md
2016-03-25 16:47:20 -07:00

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looper lesson

Learn to control blinking LEDs. #LED #screen #for #docs

@video vimeo/134453504

Topic

For loop - Blinking LED

Class

Year 7

Prior learning/place of lesson in scheme of work

Learn how to control a blinking LED. We will be learning how to create a blinking app using the for loop as well as simple commands, such as plot and pause.

What the teacher needs to know

Program: A stored set of instructions encoded in a language understood by the computer that does some form of computation, processing input and/or stored data to generate output.**

Algorithm: An unambiguous set of rules or a precise step-by-step guide to solve a problem or achieve a particular objective. The guided tutorial follows a algorithm and is a precise step-by-step guide to solve a problem**

Loop: A block of code repeated automatically under the programs control. ** The blink program introduces a While Loop. While Loop is a while loop that will repeat code forever while - true.

Command: An instruction for the computer to execute, written in a particular programming language.**

**QuickStart Computing Glossary

Documentation

Resources

Objectives

  • learn how to blink a light
  • create a for loop that will loop through each x-value, y-value from 0 to 4.
  • learn how to pause the light on and off
  • learn how to repeat turning on and off the light

Progression Pathways / Computational Thinking Framework

Algorithms

  • Uses logical reasoning to predict outputs, showing an awareness of inputs. (AL)
  • 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)
  • 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)

Data & Data Representation

  • Understands the difference between data and information. (AB)
  • Defines data types: real numbers and Boolean. (AB)

Information Technology

  • Collects, organises 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: 10 min.
  • tutorial
  • quiz
  • assessment opportunities: loops, plot, pause, clear screen

Extended Activity

  • time: 20 min.
  • challenges
  • assessment opportunities: loops, plot, pause, clear screen

Homework

Intended follow on

Publish script to the classroom.