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Tamil Nadu (TNBSE)Class 9 Science★ 2-3 marks in assessments

Computer – LibreOffice Impress

Samacheer Kalvi (TN State Board) Class 9 Science — Computer Science Chapter 25, Computer – LibreOffice Impress. Presentations are core tools in digital communication. Understanding how to create slides, add text/images, insert transitions, and run slide shows using open-source LibreOffice Impress is a vital computer literacy skill. Notes, worked examples, common mistakes, and quick revision.

⏱ 16 min readEasy difficulty✓ Free · NCERT-aligned

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The chapter at a glance

Every concept and exam-favourite branch — revisable in 5 minutes.

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Study Guide

Night-before notes

Key points, glossary and the questions most likely to show up.

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By the end of this chapter you'll be able to…

1Launch LibreOffice Impress and understand the user interface
2Create a new presentation, add slides, and format text
3Insert images, tables, and multimedia into slides
4Apply slide transitions, custom animations, and run a slide show

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Why this chapter matters

Presentations are core tools in digital communication. Understanding how to create slides, add text/images, insert transitions, and run slide shows using open-source LibreOffice Impress is a vital computer literacy skill.

Before you start — revise these

A 5-minute refresher here will save you 30 minutes of confusion below.

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Class 8 Science — Libre Office Calc

Basic office tools.

Computer – LibreOffice Impress — Class 9 Science (Samacheer Kalvi)

TN State Board (Samacheer Kalvi) Class 9 Science, Computer Science — Chapter 25. Presentations are core tools in digital communication. Understanding how to create slides, add text/images, insert transitions, and run slide shows using open-source LibreOffice Impress is a vital computer literacy skill.

1. About this chapter

This chapter covers the basics of LibreOffice Impress presentation software, slide creation, formatting, and slideshow presentation.

2. Introduction to Impress

An open-source, free presentation software (part of the LibreOffice suite).
Default save extension is .odp (OpenDocument Presentation).
Workspace: Contains Slides Pane, Tasks Pane, and Slide View.

3. Creating and Formatting Slides

Layouts: Slide outlines like Title Slide, Title and Content, Blank.
Insert Menu: Allows inserting text boxes, images, audio, video, tables, and charts.

4. Slide Show and Animations

Slide Transition: Visual effect when moving from one slide to another (e.g. Wipe, Fade, Dissolve).
Custom Animation: Effect applied to individual elements inside a slide.
Running the Show: Press F5 to start from slide 1. Use Arrow keys to navigate. Press Esc to exit.

Key formulas & results

Everything you need to memorise, in one card. Screenshot this for revision.

Presentation Mode Shortcut

F5 key

Starts the slideshow from the first slide. Shift + F5 starts from current slide.

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Common mistakes & fixes

These are the exact errors that cost students marks in board exams. Read them once, save yourself the trouble.

WATCH OUT

✗ Overloading slides with too much text.

✓ Use bullet points and summaries (e.g., 6x6 rule: maximum 6 lines per slide, 6 words per line) and rely on clean visual images instead of paragraphs.

WATCH OUT

✗ Confusing slide transitions with custom animations.

✓ Transitions apply to how the entire slide enters the screen. Animations apply to individual elements (text, images) inside a slide.

NCERT exercises (with solutions)

Every NCERT exercise from this chapter — what it covers and how many questions to expect.

Multiple Choice Questions

Questions on Impress shortcuts, file extensions, and views.

Questions

Short Answer Questions

Slide layouts, templates, transitions, and running shows.

Questions

Practice problems

Try each one yourself before tapping "Show solution". Active recall > rereading.

Q1EASY· Concept

What is LibreOffice Impress?

▶ Show solution

An open-source presentation software used to create slide shows, reports, and multimedia presentations containing text, charts, graphics, and animations.

Q2MEDIUM· Short

Name two ways to run a slide show in Impress.

▶ Show solution

1. Press the F5 key (runs from start). 2. Click the 'Start from First Slide' icon on the Slide Show toolbar.

5-minute revision

The whole chapter, distilled. Read this the night before the exam.

•Impress is free open-source presentation software.
•Save format: .odp.
•F5 starts slideshow; Esc ends it.
•Transitions are for slides; custom animations are for slide elements.

Tamil Nadu (TNBSE) marks blueprint

Where the marks come from in this chapter — so you can plan your prep.

Typical chapter weightage: 2-3 marks in assessments

Question type	Marks each	Typical count	What it tests
MCQ	1	1-2	Base concepts and definitions
Short Answer	2-3	1-2	Descriptive and application points

Prep strategy

Understand core definitions and solve standard textbook problems.
Review common mistakes to avoid losing easy marks.

Where this shows up in the real world

This chapter isn't just an exam topic — it lives in the world around you.

School Projects

Students prepare slide presentations to explain science projects and report findings visually.

Business Meetings

Professionals use Impress slide shows to present quarterly reports, sales pitches, and project plans.

Exam strategy

Battle-tested tips from teachers and toppers for this chapter.

Write definitions precisely as defined in the textbook.
Draw neat, labeled diagrams for biology and physics chapters.

Going beyond the textbook

For olympiad aspirants and curious learners — topics that build on this chapter.

Read advanced reference materials to explore concepts beyond the school syllabus.

Where else this chapter is tested

CBSE board isn't the only one — other exams test this chapter too.

Class 9 Annual ExamsHigh

NTSE Stage 1Medium

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Questions students ask

The real ones — pulled from the Q&A community and tutor sessions.

.odp (OpenDocument Presentation).

Pre-designed templates containing placeholders for titles, text, bullet lists, charts, and tables that help structure slides quickly.

Practice more, ask doubts, find a tutor

Tamil Nadu (TNBSE) Class 9 mock tests

Tamil Nadu (TNBSE) Class 9 PYQs

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Science flashcards

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