Fractions Intro

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Fractions Intro Skjermbilde  Last ned  Innbygging
  • Brøker
  • Ekvivalente brøker
  • Uekte brøk
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Innhold

  • Brøker
  • Ekvivalente brøker
  • Uekte brøk
  • Tallinje

Beskrivelse

Utforsk brøker mens du forsyner deg med 1/3 sjokoladekake og skyller den ned med 1/2 glass appelsinjuice. Lag dine egne brøker med morsomme interaktive objekter. Koble sammen figurer og tall for å vinne stjerner i brøkspillet. Utfordre seg selv på det vanskelighetsnivået du ønsker. Prøv å samle mange stjerner!

Eksempel på læringsmål

  • Forutsi og forklar hvordan det å forandre telleren i en brøk påvirker brøkens verdi. Forutsi og forklar hvordan det å endre nevneren i en brøk påvirker brøkens verdi.
  • Gjør om fra et bilde av en brøk til en brøk med tall, og til et punkt på en tallinje.
  • Finn samsvarende brøker ved å bruke tall og bilder.
  • Lag likeverdige brøker ved hjelp av forskjellige tall.
  • Finn samsvarende brøker uttrykt ved forskjellige bilder.
  • Sammenlign brøker uttrykt med tall og mønster.

Standards Alignment

Common Core - Math

1.G.A.3
Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.
2.G.A.2
Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.
2.G.A.3
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.
3.NF.A.1
Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.
3.NF.A.2
Understand a fraction as a number on the number line; represent fractions on a number line diagram.
3.NF.A.2a
Represent a fraction 1/b on a number line diagram by defining the interval from 0 to 1 as the whole and partitioning it into b equal parts. Recognize that each part has size 1/b and that the endpoint of the part based at 0 locates the number 1/b on the number line.
3.NF.A.2b
Represent a fraction a/b on a number line diagram by marking off a lengths 1/b from 0. Recognize that the resulting interval has size a/b and that its endpoint locates the number a/b on the number line.
3.NF.A.3
Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.
3.NF.A.3a
Understand two fractions as equivalent (equal) if they are the same size, or the same point on a number line.
3.NF.A.3b
Recognize and generate simple equivalent fractions, e.g., 1/2 = 2/4, 4/6 = 2/3. Explain why the fractions are equivalent, e.g., by using a visual fraction model.
3.NF.A.3d
Compare two fractions with the same numerator or the same denominator by reasoning about their size. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model.
Versjon 1.02

Lærertips

Last ned lærertips PDF Oversikt over sim-kontroller, modellforenklinger, og innsikt i elevenes tenkning ( PDF ).

Aktiviteter sendt inn av lærere

What is a Fraction? A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Dette bidraget ble designet av PhET. Anonymous Barneskole Annet Matematikk
Comparing and Ordering Fractins Day 2 of 3 A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Meaghan Hixson Barneskole Guided Matematikk
What is a Fraction? Day 1 of 3 A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Meaghan Hixson Barneskole Guided Matematikk
Equivalent Fractions Day 3 of 3 A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Meaghan Hixson Barneskole Guided Matematikk
Fractions 3 Day Unit A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Meaghan Hixson Barneskole Guided Matematikk
How do PhET simulations fit in my middle school program? Dette bidraget ble designet av PhET. Sarah Borenstein Ungdomsskole Annet Biologi
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Geofag
PRIMARIA: Alineación con programas de la SEP México (2011 y 2017) Dette bidraget ble designet av PhET. Diana López Ungdomsskole
Barneskole
Guided
Discuss
Demo
Lekse
Lab
Fysikk
Matematikk
Kjemi
Astronomi
MS and HS TEK to Sim Alignment Elyse Zimmer Ungdomsskole
vgs
Annet Biologi
Kjemi
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분수 소개 SIM 사용설명서 이화국(Wha Kuk Lee) Ungdomsskole Demo
Lekse
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NGSS Simulation Alignment/Correlation Matthew Huffine Barneskole
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Ungdomsskole
Student - intro
Demo
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Annet
Comparing Fractions with Like Numerators and Denominators Margaret McCabe Barneskole
Ungdomsskole
Lab
Building Fractions Michellle Fiumefreddo Barneskole BS Matematikk

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