Connected Computer Systems

Overview

A practical, hands-on lesson for Year 2 students designed to help them understand that computers can be connected to form systems. Using Chromebooks and real-world analogies, this 40-minute session aligns with the National Curriculum for Computing and ICT in England, providing multi-sensory activities suitable for young learners, including those with additional needs.

Curriculum Links

National Curriculum for Computing - Key Stage 1 (Years 1 & 2):

Understand what algorithms are; how they are implemented as programs on digital devices.
Use logical reasoning to predict the behaviour of simple programs.
Recognise common uses of information technology beyond school.

Computing Programmes of Study - Year 2:

Understand how computer systems work.
Use technology purposefully to create, organise, store, manipulate and retrieve digital content.

Learning Objectives (LO)

By the end of the lesson, students will be able to:

Explain that systems are built using a number of parts.
Describe that a computer system features inputs, processes, and outputs.
Explain that computer systems can communicate with other devices.

Equipment & Resources

8 Chromebooks (one per student)
A large printed poster showing a simple computer system diagram (input, process, output) with bright icons (e.g. keyboard, CPU, screen, printer).
Printed cards with different system parts labelled (input, process, output, communication).
Velcro or magnets for interactive card placement on the poster.
Pre-prepared Chromebook activity (drag & drop labelling exercise).
Real objects to simulate inputs and outputs (e.g. a toy keyboard, headphone, light bulb, small fan).

Lesson Structure

1. Introduction (5 minutes)

Engage: Show the large poster with a colourful, simple computer system diagram. Ask:
“Can you tell me what parts you see here? What do you think a system means?”
Explain: Introduce the idea that like a machine made of many parts, a computer system is made up of different parts working together.

2. Exploring Inputs, Processes, Outputs (10 minutes)

Explain with objects:
- Show a toy keyboard (input), the Chromebook screen (output), and the "thinking" CPU in-between (process).
- Use a simple analogy: “When you press a key on the keyboard, the computer thinks about what you want, then shows you a letter on the screen.”
Class activity:
- Pass around toy inputs and outputs to show the parts physically.
- Invite students to describe what each part does in their own words with support.

3. Chromebook Labelling Activity (15 minutes)

Practical session:
- Each student opens a pre-loaded drag & drop activity on their Chromebook.
- Task: Label different parts of a computer system (inputs, processes, outputs, communication devices).
- Support provided as needed—partner work encouraged.
- Teacher circulates, discussing answers and reinforcing vocabulary.

4. Systems Communicating - Real Life Example (5 minutes)

Explain: Show how Chromebooks can communicate – e.g., sharing a simple document or sending messages.
Demonstration: Teacher sends a message or file to all Chromebooks simultaneously – highlight how devices “talk” to each other as part of a system.

5. Recap and Assessment (5 minutes)

Interactive Q&A: Use printed system cards and ask students to place them on the poster in the correct place – input, process, output, communication.
Evidence of learning:
- Listen to students' explanations using sentence starters:
  - “A system is made of…”
  - “The input is…”
  - “The output shows…”
  - “The computer talks to…”
Provide praise and specific feedback aligned with success criteria.

Differentiation & Special Needs Considerations

Use highly visual and tactile resources for learners with communication difficulties.
Provide sentence frames and word banks for expressive language support.
Use peer buddies to assist learners in the Chromebook activity.
Keep instructions clear, simple, and concise. Use repetition and gestures.
Break activities into small steps with frequent checks for understanding.

Assessment for Learning

Formative: Teacher observes student participation in activities and oral explanations.
Summative: Completed Chromebook labelling activity saved for progress review.
Self-assessment: Students use thumbs up/down or simple smiley faces to express confidence with the concept.

Extension and Home Learning Suggestion

Encourage children to spot "computer systems" at home (TV, tablet, household devices).
Create a simple drawing or collage at home showing parts of a system (input, process, output).

Teacher Notes & Tips

Be animated in explanations, linking computer systems to everyday experiences to maintain engagement.
Use real examples of input devices (mouse, microphone) and output devices (speakers, printer) to build curiosity.
Chromebooks’ tactile screen/drawing tools can be used alternatively if dragging labels proves tricky.
Celebrate small successes enthusiastically to build confidence.

This lesson plan supports National Curriculum goals on understanding computer systems, using hands-on practice and familiar technology to make abstract concepts concrete and accessible for young learners, including those with additional educational needs.