Skip to content

Latest commit

 

History

History
95 lines (69 loc) · 3.96 KB

lesson.md

File metadata and controls

95 lines (69 loc) · 3.96 KB

Lesson Plan 1.03: Script Mode and Variables

Learning Objectives

Students will be able to...

  • Define and identify: script, print, run, output, variable
  • Write a simple script and run it in the IDE or Text Editor.
  • Print values out to the console (both composed values and from variables)
  • Compare script mode vs interactive mode
  • Know how to store a value into a variable

Materials/Preparation

Pacing Guide

Duration Description
5 Minutes Do Now
20 Minutes Printing Lesson/Lab Part 1
20 Minutes Variables Lesson/Lab Part 2
10 Minutes Debrief

Instructor's Notes

1. Do Now

  • Project the Do Now on the board, circulate around the class to check that students are working and understand the instructions.

2. Printing Lesson/Lab Part 1

  • Explain that the file is the center section of the screen. Sometimes this is called a script.
  • Reminder questions:
    1. how do you save/run a file?
    2. What happened when you ran the file from the do now?
  • Explain the purpose of the print statement, which will print whatever is in between the parentheses to the console.
  • Explain to students that what appears on the console is called output.
  • Talk to students about reading a program and the order in which the computer executes statements.
  • Ask students how they would print the following:
Hello World
Hello World
Hello World
Hello World
Hello World
  • Have students work on Part 1 of the lab for 10 Minutes.

3. Variables Lesson/Lab Part 2

  • Variable: a name that refers to a value.
  • An assignment statement creates new variables and gives them values:
>>> message = 'And now for something completely different'
>>> n = 17
>>> pi = 3.1415926535897932
  • Ask the students what they think the assignment operator is.
  • Using the example above, ask which are the variables, and which are the values.
  • Tell students how assignments work from right to left, so the item on the right is assigned to the item on the left.
  • Have students work on Part 2 of the lab for 10 Minutes.

4. Four Fours

  • Four Fours is a mathematical puzzle where the goal is to find a mathematical expression for every whole number from 0 to some maximum, using only common mathematical symbols and the digit 4 (no other digit is allowed).
  • In this version, students can use use 44 which counts as two fours even though equations for 0 to 4 can be solved without using 44.
  • For example, zero can be solved with either: 44 - 44 or 4 + 4 - 4 - 4
  • Students can easily be challenged by extending the limit from the 0-4 to 5 and above.

5. Debrief

  • Talk about the difference between interactive and script mode. Discuss why you might want to use the interpreted mode: sometimes it can be faster to debug a single line and make sure it works!

Accommodation/Differentiation

If students are moving quickly, ask students to come up with a way to print two lines with only one print statement. Allow for students to search the \n character.