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Indhold

  • Brøker
  • Tilsvarende brøker
  • Uægte brøk
  • Tallinie

Beskrivelse

Udforsk brøker mens du skaffer dig 1/3 af en chokoladekage og skyld den ned med 1/2 glas vand! Opret dine egne brøker ved hjælp af sjove interaktive objekter. Match figurer og tal for at tjene stjerner i fraktions spillet. Udfordre dig selv på ethvert niveau, du kan lide. Prøv at samle mange stjerner!

Læringsmål

  • Forudsig og forklar hvordan ændring af tælleren for en brøk, påvirker brøkens værdi
  • Forudsig og forklar hvordan en ændring af nævneren af en brøk, påvirker brøkens værdi
  • Skift mellem et billede af en brøk, en tal-brøk og en punkt på en talelinje
  • Byg matchende brøker ved hjælp af tal og billeder
  • Sammenlign brøker ved hjælp af tal og mønstre

Standardjustering

Fælles indhold - matematik

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.
Version 1.02

Lærertips

Download lærertips PDF Oversigt over SIM-kontroller, modelforenklinger og indsigt i studerendes tænkemåder ( PDF ).

Aktiviteter indsendt af lærere

What is a Fraction? En gold-star betyder høj kvalitet, undersøgelsesbacerede aktiviteter som følger PhET's retningslinier. Dette bidrag er designet af PhET. Anonymous K-5 Anden Matematik
Comparing and Ordering Fractins Day 2 of 3 En gold-star betyder høj kvalitet, undersøgelsesbacerede aktiviteter som følger PhET's retningslinier. Meaghan Hixson K-5 Guidet Matematik
What is a Fraction? Day 1 of 3 En gold-star betyder høj kvalitet, undersøgelsesbacerede aktiviteter som følger PhET's retningslinier. Meaghan Hixson K-5 Guidet Matematik
Equivalent Fractions Day 3 of 3 En gold-star betyder høj kvalitet, undersøgelsesbacerede aktiviteter som følger PhET's retningslinier. Meaghan Hixson K-5 Guidet Matematik
Fractions 3 Day Unit En gold-star betyder høj kvalitet, undersøgelsesbacerede aktiviteter som følger PhET's retningslinier. Meaghan Hixson K-5 Guidet Matematik
Alignment of PhET sims with NGSS Dette bidrag er designet af PhET. Trish Loeblein Highschool Anden Kemi
Biologi
Geografi
Fysik
How do PhET simulations fit in my middle school program? Dette bidrag er designet af PhET. Sarah Borenstein Mellemskole Anden Biologi
Kemi
Fysik
Geografi
MS and HS TEK to Sim Alignment Elyse Zimmer Highschool
Mellemskole
Anden Kemi
Fysik
Biologi
분수 소개 SIM 사용설명서 이화국(Wha Kuk Lee) Mellemskole Demo
Lektie
Matematik
NGSS Simulation Alignment/Correlation Matthew Huffine Mellemskole
K-5
Highschool
UG-Intro
Demo
Anden
Anden
Comparing Fractions with Like Numerators and Denominators Margaret McCabe Mellemskole
K-5
Laboratorie
Building Fractions Michellle Fiumefreddo K-5 Koncept spørgsmål Matematik

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Designteam Tredjeparts biblioteker Tak til
  • Ariel Paul (lead designer)
  • Sam Reid (lead developer)
  • Kathy Perkins
  • Trish Loeblein
  • Mike Dubson
  • Piccolo2D
  • Lombok
  • Functional Java