SlideShare a Scribd company logo
1 of 19
Brøk GLU 1 07.12.10 & 05.01.11 Lars Arne Markhus
Matematikkrom ,[object Object],Matematikkrommet
Kunnskapsløftet ,[object Object],[object Object],[object Object],[object Object]
 
Hva er brøk? ,[object Object],[object Object],[object Object]
Addisjon av brøk
Likeverdige brøker
Forkortning av brøker ,[object Object],[object Object]
Utvidelse av brøker ,[object Object],[object Object]
Addisjon av brøk med ulik nevner Vi må gjøre om til fellesnevner, i dette tilfellet 6.
Hvordan finne fellesnevner? ,[object Object],[object Object],[object Object],[object Object]
Uekte brøk ,[object Object],[object Object]
Oppgaveregning ,[object Object]
Plassering av brøk på tall-linja ,[object Object],[object Object],[object Object],[object Object]
Multiplikasjon av brøk ,[object Object],Vi tar tre stykker av en seksdel.
Multiplikasjon av brøk ,[object Object],Vi tar tre av to seksdeler.
Multiplikasjon av brøk på geobrett ,[object Object],[object Object],[object Object],[object Object],[object Object]
Multiplikasjon av brøk ,[object Object],[object Object]
Oppgaveregning ,[object Object]

More Related Content

Featured

2024 State of Marketing Report – by Hubspot
2024 State of Marketing Report – by Hubspot2024 State of Marketing Report – by Hubspot
2024 State of Marketing Report – by HubspotMarius Sescu
 
Everything You Need To Know About ChatGPT
Everything You Need To Know About ChatGPTEverything You Need To Know About ChatGPT
Everything You Need To Know About ChatGPTExpeed Software
 
Product Design Trends in 2024 | Teenage Engineerings
Product Design Trends in 2024 | Teenage EngineeringsProduct Design Trends in 2024 | Teenage Engineerings
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
 
How Race, Age and Gender Shape Attitudes Towards Mental Health
How Race, Age and Gender Shape Attitudes Towards Mental HealthHow Race, Age and Gender Shape Attitudes Towards Mental Health
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
 
AI Trends in Creative Operations 2024 by Artwork Flow.pdf
AI Trends in Creative Operations 2024 by Artwork Flow.pdfAI Trends in Creative Operations 2024 by Artwork Flow.pdf
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
 
PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024Neil Kimberley
 
Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)contently
 
How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024Albert Qian
 
Social Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie InsightsSocial Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie InsightsKurio // The Social Media Age(ncy)
 
Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
 
5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summary5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summarySpeakerHub
 
ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
 
Getting into the tech field. what next
Getting into the tech field. what next Getting into the tech field. what next
Getting into the tech field. what next Tessa Mero
 
Google's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search IntentGoogle's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search IntentLily Ray
 
Time Management & Productivity - Best Practices
Time Management & Productivity -  Best PracticesTime Management & Productivity -  Best Practices
Time Management & Productivity - Best PracticesVit Horky
 
The six step guide to practical project management
The six step guide to practical project managementThe six step guide to practical project management
The six step guide to practical project managementMindGenius
 
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...RachelPearson36
 

Featured (20)

2024 State of Marketing Report – by Hubspot
2024 State of Marketing Report – by Hubspot2024 State of Marketing Report – by Hubspot
2024 State of Marketing Report – by Hubspot
 
Everything You Need To Know About ChatGPT
Everything You Need To Know About ChatGPTEverything You Need To Know About ChatGPT
Everything You Need To Know About ChatGPT
 
Product Design Trends in 2024 | Teenage Engineerings
Product Design Trends in 2024 | Teenage EngineeringsProduct Design Trends in 2024 | Teenage Engineerings
Product Design Trends in 2024 | Teenage Engineerings
 
How Race, Age and Gender Shape Attitudes Towards Mental Health
How Race, Age and Gender Shape Attitudes Towards Mental HealthHow Race, Age and Gender Shape Attitudes Towards Mental Health
How Race, Age and Gender Shape Attitudes Towards Mental Health
 
AI Trends in Creative Operations 2024 by Artwork Flow.pdf
AI Trends in Creative Operations 2024 by Artwork Flow.pdfAI Trends in Creative Operations 2024 by Artwork Flow.pdf
AI Trends in Creative Operations 2024 by Artwork Flow.pdf
 
Skeleton Culture Code
Skeleton Culture CodeSkeleton Culture Code
Skeleton Culture Code
 
PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024PEPSICO Presentation to CAGNY Conference Feb 2024
PEPSICO Presentation to CAGNY Conference Feb 2024
 
Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)Content Methodology: A Best Practices Report (Webinar)
Content Methodology: A Best Practices Report (Webinar)
 
How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024How to Prepare For a Successful Job Search for 2024
How to Prepare For a Successful Job Search for 2024
 
Social Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie InsightsSocial Media Marketing Trends 2024 // The Global Indie Insights
Social Media Marketing Trends 2024 // The Global Indie Insights
 
Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024Trends In Paid Search: Navigating The Digital Landscape In 2024
Trends In Paid Search: Navigating The Digital Landscape In 2024
 
5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summary5 Public speaking tips from TED - Visualized summary
5 Public speaking tips from TED - Visualized summary
 
ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd ChatGPT and the Future of Work - Clark Boyd
ChatGPT and the Future of Work - Clark Boyd
 
Getting into the tech field. what next
Getting into the tech field. what next Getting into the tech field. what next
Getting into the tech field. what next
 
Google's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search IntentGoogle's Just Not That Into You: Understanding Core Updates & Search Intent
Google's Just Not That Into You: Understanding Core Updates & Search Intent
 
How to have difficult conversations
How to have difficult conversations How to have difficult conversations
How to have difficult conversations
 
Introduction to Data Science
Introduction to Data ScienceIntroduction to Data Science
Introduction to Data Science
 
Time Management & Productivity - Best Practices
Time Management & Productivity -  Best PracticesTime Management & Productivity -  Best Practices
Time Management & Productivity - Best Practices
 
The six step guide to practical project management
The six step guide to practical project managementThe six step guide to practical project management
The six step guide to practical project management
 
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
 

Brøk

Editor's Notes

  1. Vis frem en brøkpizza og et opplegg Vi vil at matematikkundervisningen på NLA skal være praksisnær. Derfor fokuserer vi på bruk av konkreter i matematikkundervisningen. Det kan være enklere å forstå matematikk når den kan knyttes til konkrete gjenstander. Læreplanen L97 la til rette for mer aktivitet i matematikkundervisningen, men evalueringene viste at aktivitetene ofte ikke var målrettede nok. Elevene gjennomførte aktivitetene, men læringsutbyttet varierte. Med bakgrunn i dette har jeg samlet, tilrettelagt og laget 133 undervisningsopplegg til konkretene som er utstilt i rommet. Disse undervisningsoppleggene er beregnet for lærere og studenter, og de skal veilede dem i forhold til hvordan man kan legge til rette for læring på en målrettet måte i forbindelse med bruk av de ulike konkretene. Rommet har tre reoler, en for småskoletrinnet, en for mellomtrinnet og en for ungdomstrinnet. Undervisningsoppleggene er sortert etter trinn og hovedområdene i kunnskapsløftet. Det er blitt laget oversiktige plansjer som forteller i hvilken hylle man finner de ulike oppleggene og i hvilke reoler man finner de ulike konkretene. Poenget med dette er at brukerne av rommet raskt og enkelt skal finne det de leter etter. Det er også blitt kjøpt inn en rekke klassesett som skal lånes ut til studentene mens de er i praksis slik at de selv kan prøve ut ideer som er blitt tatt opp i høgskolens undervisning. Hensikten med dette er blant annet en bedre integrering av høgskolens undervisning og praksisfeltet. Disse klassesettene kan også brukes av studenter i forbindelse med høgskolens matematikkundervisning.
  2. Fortell om TIMSS. La studentene få prøve seg på denne oppgaven. Riktig svar er 111/40. Ikke gjennomgå oppgaven nå. 25 % av de norske elevene klarte denne oppgaven.
  3. Snakk om en enhet som deles i like store deler. Den tilnærmingen jeg bruker i dag kan brukes direkte i skolen.
  4. Sett sammen de tre pizzastykkene.
  5. Sett sammen de tre pizzastykkene.
  6. Ta fra hverandre pizzastykkene.
  7. Vi utvider brøkene til fellesnevneren.
  8. På tavla: 3/8 + 4/20. Vis hvordan faktoriseringene utføres. Begrunnelse for fellesnevner: Både 20 og 8 kan deles på 4. Dermed kan også 160 deles på 4. Vi deler på 4 da dette er det største tallet som både kan deles på 8 og 20 da vi ønsker så liten fellesnevner som mulig.
  9. På tavla: Hvordan omgjøre 13/6 og 35/3 til blandet tall?
  10. Mange elever vil tenke at 9 er større enn 3 og 2 er større enn 1. Dermed må 2/9 være større enn 1/3. La studentene prøve seg på dette. Det er ikke lov å bruke lommeregner. Regn for hånd. Metode 1: gjøre om til 9-deler. Metode 2: gjøre om til desimaltall.
  11. Vis dette på figuren og vis dem et geobrett. Geobrettet kan brukes på mange måter, og vi har klassesett tilgjengelig som studentene kan bruke i praksis.
  12. Vis dette på geobrettet.