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love meter blocks lesson

create a love meter with the BBC micro:bit #pin #pressed #string #if #var #pause #show #docs

@video td/videos/love-meter-0

Topic

On Pin Pressed

Quick Links

Class

Year 7

Prior learning/place of lesson in scheme of work

Learn how to use the pin pressed, on pin pressed to run code when the user holds the GND pin with one hand, and presses pin 0 with the other hand, thus completing a circuit. We will be learning how to create a love meter using input on pin pressed, a local variable, math random, If (conditional) as well as simple commands, such as show number, pause, and show string.

What the teacher needs to know/QuickStart Computing Glossary

  • Hardware: The physical systems and components of digital devices; see also software.
  • 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.
  • Script: A computer program typically executed one line at a time through an interpreter, such as the instructions for a Scratch character.
  • Variables: A way in which computer programs can store, retrieve or change data, such as a score, the time left, or the user’s name.

Documentation

Resources

Objectives

  • learn how to run code when the user holds the GND pin in one hand, and presses pin 0 with the other hand, thus completing a circuit; when you run a script with this function in a web browser, click pin 0 on the simulator
  • learn how to a create a variable for a place where you can store and retrieve data
  • learn how Boolean operators take Boolean inputs and evaluates to a Boolean output
  • learn how to return a random number
  • learn how to show a number on the LED screen
  • learn how to pause your code for the specified number of milliseconds
  • learn how to conditionally run code depending on whether a condition is true or not
  • learn how to show a string on the LED screen one character at a time (scrolling from left to right)

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)
  • Designs solutions by decomposing a problem and creates a sub-solution for each of these parts. (DE) (AL) (AB)
  • 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)
  • 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)
  • 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)
  • Makes judgements about digital content when evaluating and repurposing it for a given audience (EV) (GE)
  • 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

Homework