Multiplying fractions
Multiply fractions by whole numbers and by other fractions.
Planned. This module is part of the plan and is not written yet.
Why it matters
If beans grow on 2/3 of a field and 3/4 of the beans are ready, multiplying the fractions tells the farmer how much of the whole field to pick today.
Draft outline · in review- For
- Level 5–7 · Primary 5 to JSS 1
- Inside
- 5 lessons and a test · about 60 minutes
- Topic
- Fraction operations · core, 2 of 4
Inside the module.
5 lessons in order, about 60 minutes in all, then a short test. Learners go at their own pace; the minutes are a guide, not a timetable.
Draft outline · in review
Lesson 1: A fraction times a whole number
See 4 × 2/3 as four lots of 2/3.
Explain15 min, from minute 0
Lesson 2: A fraction of a fraction
Use a shaded rectangle to see that 1/2 × 1/3 = 1/6.
Explain15 min, from minute 15
Lesson 3: Multiply tops, multiply bottoms
Multiply the numerators and the denominators, and see why it matches the picture.
Worked example10 min, from minute 30
Lesson 4: Simplifying
Multiply fractions and give each answer in its simplest form.
Practice15 min, from minute 40
Lesson 5: Review
Mixed questions, with feedback on each.
Review5 min, from minute 55
End-of-module test
Multiply fractions by whole numbers and by other fractions, and simplify the answers.
Mastered at 85% or more. Retake it until you pass; nothing is lost, and each try gives feedback.
Already know it? A Challenge Test (planned) clears the whole module: 90% overall, no objective below 75%.
Last stageafter about 60 min
Practicalities
Draft outline · in reviewBuilt to run offline
Planned to run on the Lantern's own computer, with no internet needed.
Languages
Planned first in English; every module aims to reach all of the Lantern's languages.
Try a question.
One question from the module, as a learner would meet it. Have a go, then open the worked solution a step at a time.
Draft outline · in review
Wanjiru plants beans on 2/3 of her field. Today she picks 3/4 of the bean area. What fraction of the whole field does she pick today? Simplify your answer.
Work it out on paper first, then show the answer and mark it yourself.
Particulars
Where it sits
Maths · Fractions, decimals and percentages · Fraction operations
What a learner can do after it
- Multiply a fraction by a whole number.
- Multiply two fractions and simplify the answer.
Level
Level 5–7 · Primary 5 to JSS 1
Level mappings are approximate. A qualified teacher or lecturer in each country must check them before they appear in the app.
Difficulty for its level
2 of 4 · Core
Time
About 60 minutes
Alignments
- Aligned to Common Corepartial · in review5.NF.B.4
Alignment in review until a qualified teacher or lecturer checks it. No exam body, university or vendor endorses us; learners still sit the real exam.
Challenge Test
Planned: a Challenge Test to prove you know it and skip it. Pass at 90% overall, with no objective below 75%.
The route here.
Everything this module builds on, drawn as a route from its foundations. Solid lanes must be mastered first, or cleared by a Challenge Test; dashed lanes are suggestions that never lock anything.
- MA-FDP-FRS-01Parts of a wholeMaths · Primary 2 to Primary 3 (Level 2–3) · Sample lesson in the demoTry the sample lesson: Parts of a whole
- MA-FDP-FRS-03Fractions on a number lineMaths · Primary 3 to Primary 4 (Level 3–4) · Planned Needs Parts of a whole (required).
- MA-FDP-OPS-01Adding and subtracting with the same denominatorMaths · Primary 4 to Primary 5 (Level 4–5) · Planned Needs Fractions on a number line (required).
- MA-FDP-OPS-03Multiplying fractionsMaths · Primary 5 to JSS 1 (Level 5–7) · Planned · the destination Needs Adding and subtracting with the same denominator (required).
Help light the room where this is learned.
Every route on this map starts in a classroom with 24 stations, a tutor that works offline and a facilitator upstairs. Four are planned and waiting for light.