Lesson 2: Get Started with Raspberry Pi¶

Authors:	Paul Xu, Marcus Penny
Date:	Jan 26, 2018
Time:	1 hour

Lesson Information¶

This lesson introduces students to the Raspberry Pi microcomputer. The goal of the lesson is to familiarize students to their development environment based on Linux. By the end of the class they will have solid understanding of the differences between software and hardware, and will be able to name a few important types of hardware/software as well as a few examples in each category.

The purpose of the lesson is to:¶

Familiarize the students with Raspberry Pi
Distinguish the differences between hardware and software
Introduce students to Python

Driving Questions:¶

What is the Raspberry Pi?
What are the differences between software and hardware?
What are some important pieces of software and hardware a computer require to work?

Computer Science Concepts:¶

Hardware Central Processing Unit (CPU), memory, hard drive, monitor, keyboard and mouse.

Software Operating Systems (OS), applications (APPs), websites, programming languages.

Materials Needed:¶

Raspberry Pi 3s (barebone), this lesson plan

Target Skills:¶

Students will be able to

SWBAT understand that Raspberry Pi is a computer that runs linux
SWBAT differentiate software and hardware
SWBAT launch the Thonny Python IDE to program Python

Instructional Plan and Structure¶

Overview of the lesson (5 minutes)¶

Communicate to the students that we are going to do 3 things today: 1) learn what a Raspberry Pi computer is, 2) get a Raspberry Pi computer to work, and 3) start programming with the Raspberry Pi.

Ask the students what they think a computer might look like and what some of the vital parts are. Then introduce to the students the Raspberry Pi. Highlight the fact that it is small (the size of a credit card), inexpensive (costs only $35, so everyone can buy one), and incredibly powerful and fun to play with. And now we are going to learn what it is and how it works.

Raspberry Pi Unplugged (15 minutes)¶

Hand out to the students the barebone Raspberry Pis (Those not in cases, or take the Raspberry Pis out of the cases). Ask the students to discuss what they think each parts are. A print-out of the image below might be very helpful:

Getting the Raspberry Pi to Work (15 minutes)¶

Now ask the students to assemble the Raspberry Pis. Introduce the cables and port names would be helpful. Those are:

HDMI port on Raspberry Pi -> DVI port on monitor (secure the DVI port with the screws
MicroUSB port on Raspberry Pi -> AC Power
Power cable on monitor -> AC Power
USB ports on Raspberry Pi - Keyboard and mouse

Raspbian - the Software (15 minutes)¶

Now that the students Raspberry Pis are up and running, go through the software systems of Raspberry Pi.

The operating system (OS) of the Raspberry Pi is a version of Linux (No need to know Raspbian but Linux is important). What are the differences between Windows, MacOS, iOS, Android, and Linux OSes?
Go through some of the software. Raspberry Pi is designed for kids to learn coding, so there are plenty of IDEs. There is a free version of office on Raspberry Pis as well (LibreOffice), and there are also games (Minecraft) and web-browsers (Chromium, a free version of Google Chrome).
A very important software is called the terminal (which can be launched on the task bar). Open the taskbar and remind the students what computers were like before there were Graphical User Interfaces (GUI).

Get started with Python (5 minutes)¶

This part serves as a hook to next class’ activities. The students can start programming in Python in two ways:

Type python3 in the terminal
Start Thonny Python found in the start menu

This starts an interactive programming environment (also called REPL) of Python, indicated by the three arrows >>>. The students can feel free to type whatever they like.

Review and Assessment¶

Answer the following questions:

What is Raspberry Pi?
What are the differences between software and hardware?
What are some important pieces of software and hardware?
Name the components of the Raspberry Pi on the picture below.