Programming with Scratch
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This document provides an introduction to programming and the Scratch programming language for 6th grade students. It explains that programming languages allow users to tell computers what to do through coded instructions. It then outlines some basic Scratch programming elements like sprites, costumes, statements, Boolean expressions, conditions, loops, variables, threads and events. The goal of the lesson is for students to understand why programming languages are used, identify Scratch elements, and use Scratch to create a holiday greeting card.
Programming with Scratch
- 1. http://cs.harvard.edu/malan/scratch/ index.phpFA2014 Mrs. Hauer Palmyra Area High School 1
- 2. 6th Grade Programmer and Game Developer What do you think about kids programming? 2
- 3. At the end of this lesson, students will be able to: • Understand Why We Use Programming Languages • Identify Basic Scratch Programming Elements • Use Scratch to create a Holiday Greeting Card Note-taking Sheet 3
- 4. • The ability to talk to a computer in a language it can understand • The computer will read your programming code and execute your instructions • The code must be correct and unambiguous 4
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- 7. Why do we have programming languages? A way of thinking A way of effectively expressing instructions What is a language for? Tell the hardware what you want it to do Not necessary to make physical hardware changes 7
- 8. • Statements • Boolean Expression • Conditions • Loops • Variables • Threads • Events • Sprite 8
- 9. 2D image or animation Costume 1 Costume 2 Costume 3 Costume 4 Animated Sprite 9
- 10. • Tell the computer what to do • It is an instruction to follow SCRATCH EXAMPLE: 10
- 11. • An expression that is either TRUE or FALSE SCRATCH EXAMPLE: With Boolean expressions we can create conditions! PYTHON Boolean = bool(input( “Enter a Boolean Value: “)) 11
- 12. • Must be TRUE to occur • If, When & Until are condition labels SCRATCH EXAMPLE: If Construct 12
- 13. If- Else Construct PYTHON Value = input (“Press a Key”) If value == SPACE: Print “Hello!” Else: Print “Goodbye!” 13
- 14. • A loop executes multiple statements SCRATCH EXAMPLE: 14
- 15. • A changeable value recorded in memory • Used whenever a value must be stored SCRATCH EXAMPLE: 15
- 16. • A mini-program within a program • You can have multiple threads in your program SCRATCH EXAMPLE: It is helpful to use separate threads for conceptually distinct tasks 16
- 17. • Threads and sprites can communicate through the use of EVENTS SCRATCH EXAMPLE: 17
- 18. Essential Questions Why do we use Programming Languages? What are some of the basic Scratch programming elements? 18