# Razlomci - Uvod

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Klikni i započni
Koristi ovaj HTML kod da bi se pojavio ekran sa natpisom "Klikni i započni" ("Click to Run"). Fractions Equivalent Fractions Improper Fraction PhET je podržаn od: i nаstаvnikа kаo što ste Vi!
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• Fractions
• Equivalent Fractions
• Improper Fraction
• Number Line

### Description

Istrаžujte rаzlomke zаlivаjući 1/3 čokolаdne torte sа 1/2 čаše sokа od nаrаndže. Prаvite svoje rаzlomke koristeći zаbаvne interаktivne objekte. Spojite oblike i brojeve i osvojite zvjezdice (poene). Izаzovite sаmi sebe nа višem nivou. Budite sigurni zаšto je 3/8 burekа uvijek više od 1/4. Skupite što više zvjezdicа!

### Primjeri obrazovnih ciljeva

• Predict and explain how changing the numerator of a fraction affects the fraction's value
• Predict and explain how changing the denominator of a fraction affects the fraction's value
• Convert between a picture of a fraction, a numeric fraction, and a point on a number line
• Build matching fractions using numbers and pictures
• Compare fractions using numbers and patterns

### 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.
Version 1.02

### Teacher Tips

 Vodič za nastavnike (pdf) sadrži savjete kreirane оd strane PhET tima. ( PDF ).

### Teacher-Submitted Activities

What is a Fraction? Anonymous K-5 (OŠ) Ostalo Matematika
Comparing and Ordering Fractins Day 2 of 3 Meaghan Hixson K-5 (OŠ) Guided Matematika
What is a Fraction? Day 1 of 3 Meaghan Hixson K-5 (OŠ) Guided Matematika
Equivalent Fractions Day 3 of 3 Meaghan Hixson K-5 (OŠ) Guided Matematika
Fractions 3 Day Unit Meaghan Hixson K-5 (OŠ) Guided Matematika
How do PhET simulations fit in my middle school program? Sarah Borenstein MS (SŠ) Ostalo Hemija
Biologija
Fizika
Nauka o Zemlji
PRIMARIA: Alineación con programas de la SEP México (2011 y 2017) Diana López MS (SŠ)
K-5 (OŠ)
DZ
Guided
Lab
Discuss
Demo
Matematika
Fizika
Astronomija
Hemija
MS and HS TEK to Sim Alignment Elyse Zimmer MS (SŠ)
HS (VŠ)
Ostalo Hemija
Fizika
Biologija
분수 소개 SIM 사용설명서 이화국(Wha Kuk Lee) MS (SŠ) Demo
DZ
Matematika
NGSS Simulation Alignment/Correlation Matthew Huffine K-5 (OŠ)
UG-Intro (VSŠ)
MS (SŠ)
HS (VŠ)
Ostalo
Demo
Ostalo
Comparing Fractions with Like Numerators and Denominators Margaret McCabe MS (SŠ)
K-5 (OŠ)
Lab
Building Fractions Michellle Fiumefreddo K-5 (OŠ) KP Matematika
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