The objectives of the lesson where for students to:
- Define a computer system
- Describe the purpose of RAM in a computer system
- State the purpose of the CPU
- Explain the need for secondary storage
I started by asking students how many computers they thought they had in their homes. (Based on the Royal Institute Christmas Lectures 2008: Chips with everything).
I used edmodo (www.edmodo.com) to create an online poll. (See results below.) Alternatively, you could use your existing classroom response system or favourite Web 2.0 tool. (See alternatives below.)
After discussing the students answers, I explained the four basic components that make up a computer system – Input, Process, Output and Storage. I then challenged the students to conduct some research on these three areas, the results of which would be used to create a class wiki the following lesson.
After reviewing some of the students research, I decided to let them loose on the old computers. Students were put into groups of 3, each group armed with a screwdriver and iPad. They were then instructed to take their computer apart - remembering where each part goes as they had to put them back together ready for the next class.
As well as taking the computers apart, students had to photograph each component and explain briefly its purpose. Students were allowed to use whichever tool they wished to record their findings. These included tools such as: Skitch (iPad), Explain Everything (iPad), iMovie (Mac) or Movie Maker, iPhoto (Mac) or PhotoStory, and PowerPoint or Word etc. To help them along their way, I uploaded some resources to edmodo (see links below). Some students even had a go at using Morfo (www.morfoapp.com) to create talking computer components.
Your PC, inside and out: Part 1 (Free download courtesy of makeuseof.com)
In this guide Lachlan Roy breaks the computer down into its different components. For each component he describes its function, talks about best brands on the market, explains the different specifications to look out for and provides a bit of history, too. Part 1 focusses on the motherboard.
Your PC, inside and out: Part 2 (Free download courtesy of makeuseof.com)
Part 2 highlights everything you need to know about CPUs, storage devices, memory, graphics cards and other computer components.
After reviewing the students work, we finished off by playing a game of "You Say, We Pay" - Inside a Computer. If you have never played the game before, this is a game borrowed from from the 'Richard and Judy Show'. The aim of the game is for one student (Blind folded or back turned to the computer screen) to guess what pictures are being displayed on the screen using only descriptions from other students (Other students are not allowed to use the word or use words that rhyme). For a little extra competition, you can also split the class into two and take it in turns to see which team can get the most correct answers (without cheating) - See PowerPoint below:
As promised, each week I will provide alternative suggestions for some of the activities in each lesson. Here are my alternative suggestions for this weeks lesson:
Poll: Instead of using edmodo (www.edmodo.com) to conduct a poll, you could also use socrative (www.socrotive.com) or infuse learning (www.infuselearning.com). (For other alternatives, see my blog on online response systems). Alternatively, you could just ask for a show of hands.
Slideshow: If you don't have access to iPhoto (Mac) you could also use Movie Maker, PhotoStory or Animoto (www.animoto.com)