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

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flipping bird lesson

count the number of times the BBC micro:bit has been shaken.

@video td/videos/flipping-bird-0

Topic

Math - Modulo

Class

Year 7

Prior learning/place of lesson in scheme of work

Learn how to return the modulus, math->mod to determine if you will plot image. We will be learning how to return the modulus by using a local variable, input on shake, if (conditional), modulo, as well as simple commands such as plot image.

What the teacher needs to know / QuickStart Computing Glossary

  • Algorithm: An unambiguous set of rules or a precise step-bystep guide to solve a problem or achieve a particular objective.
  • Input: Data provided to a computer system, such as via a keyboard, mouse, microphone, camera or physical sensors.
  • Output: The information produced by a computer system for its user, typically on a screen, through speakers or on a printer, but possibly through the control of motors in physical systems.
  • Programmable toys: Robots designed for children to use, accepting input, storing short sequences of simple instructions and moving according to this stored program.
  • 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.
  • Repetition: Executing a section of computer code a number of times as part of the program.
  • Simulation: Using a computer to model the state and behaviour of real-world (or imaginary) systems, including physical or social systems; an integral part of most computer games.
  • Variables: A way in which computer programs can store, retrieve or change data, such as a score, the time left, or the users name.

Documentation

Resources

Objectives

  • learn how to create a local variable as a place where you can store data, so that you can use it in your code, across functions, and in nested code blocks
  • learn how to run code when the micro:bit is shaken; when running code in the browser, moving the mouse quickly simulates shaking
  • learn how to conditionally run code depending on whether a condition is true or not
  • learn how to return the modulus
  • learn how to display an image on the BBC micro:bit's LED screen

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)
  • Uses logical reasoning to predict outputs, showing an awareness of inputs (AL)
  • Shows an awareness of tasks best completed by humans or computers (EV)
  • Designs solutions by decomposing a problem and creates a sub-solution for each of these parts. (DE) (AL) (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)
  • Recognises that different algorithms exist for the same problem (AL) (GE)
  • 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)
  • Declares and assigns variables(AB)
  • Uses post-tested loop e.g.until,and a sequence of selection statements in programs,including an if,then and else statement(AL)
  • 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)
  • Uses filters or can perform single criteria searches for information.(AL)
  • 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)

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)
  • Uses criteria to evaluate the quality of solutions, can identify improvements making some refinements to the solution, and future solutions (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

Extended Activity

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

Homework

Intended follow on

Publish script to the classroom.