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  • NECTA · Cambridge · Work & Life
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NECTA · Form I · Mathematics

Small steps. Stronger understanding.

½+¼=¾

Add the parts to see the whole.

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NECTA · Form I · Guided lessonA−A+

Topic 1 of 5

Fractions of a whole

A fraction represents equal parts of a whole. The denominator shows the number of equal parts; the numerator shows how many parts are selected.

Your learning objective

Explain what a fraction of a whole means and apply it to a guided example.

Explore a guided example

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NECTA · O-Level & A-Level

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NECTA

Secondary school subjects from Form I to Form VI, aligned to the national curriculum.

What's included · Form I

  • Curriculum-aligned lessons
  • Topic tests and past papers
  • Exam readiness tracking

A continuous learning loop

Discover. Understand. Measure. Grow.

TESEA shows you what to study next, so your time goes where it makes the biggest difference.

Topic understanding

Mathematics · Form I

69%
  • Numbers92%
  • Fractions78%
  • Decimals64%
  • Percentages41%

Next step: revise Percentages

Rafiki AI

NECTA · Form I · Mathematics

Ask Rafiki about this lesson…

Meet Rafiki AI

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Stuck on a step? Rafiki explains it in simple words, using the lesson you are working on right now.

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Try Rafiki

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School workspace · Sample Secondary School

School Admin

Seats in use

412 / 500

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18

Classes

12

Recent activity

  • Form II seats assigned
  • New tutor invited
  • Term progress report ready

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  • 01

    Seat management

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  • 02

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  • 03

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  • 04

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Community discussions

Ask a question
  • AminaBiology · Form IIAnswered

    Why does respiration release energy from food?

    4 answers12 helpful
  • BarakaMathematics · Form IAnswered

    How do I simplify ⅔ + ⅙ step by step?

    2 answers7 helpful
  • NeemaChemistry · Form III

    What is the difference between an element and a compound?

    Be the first to answer3 helpful

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Start free. Pay only for what you open.

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Growth

Everything on TESEA, with nothing more to pay.

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Or TSh 432,000 a year, 20% off

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FAQ

Questions, answered.

Can't find what you need? Our help centre has more answers once you sign in.

An online learning platform for Tanzanian learners, with lessons in different formats, live classes, assessments, tutor feedback and offline study.

NECTA (Form I–VI), Cambridge (Grade 1–13) and Work & Life pathways for professionals.

Yes. Save published lessons to your device and your completed activities sync when you reconnect.

Yes. Switch between English and Kiswahili at any time using the language button at the top of the page.

Yes. TESEA works in any modern browser and can be installed on your home screen like an app.

Schools get dedicated workspaces for admins, tutors and learners. Sign in with your school account or contact TESEA Academy to get started.

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Your next step starts here.

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  • NECTA · Cambridge · Work & Life
  • Works on any phone
  • Learn offline

Your learning journey

  1. 01

    Choose your pathway

    NECTA, Cambridge or Work & Life

  2. 02

    Learn at your own pace

    Lessons, live classes and reading

  3. 03

    Keep growing

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