Top videos
For Free Practice Go To: http://[a]www.ilearn.com%2Ffractions[/a]
iLearn provides professionally designed math instruction for all markets, including home, K-12, and college. Our instructional programs combine the best scientifically-designed curriculum with state-of-the art delivery systems. Our specialty is providing easy-to-use, highly effective support, for students who have difficulty learning math. It’s the easiest and fastest way to understand math and master math procedures.
This video is one of over 800 similar lessons from iLearn on math topics ranging from kindergarten through high school math.
• Subscribe to our channel and have access to all of our lessons here on YouTube.
• Share this video with your friends via your favorite social site.
For free access to unlimited online practice and tests, along with free access to these lessons, go to:
http://[a]www.ilearn.com%2Ffractions[/a]
For more information, contact us at: www.ilearn.com
1-877-789-2088 ext. 128 (toll free)
If you prefer to read, rather than watch this video, here’s the transcript:
Title: Multiplying Fractions and Whole Numbers - Fast And Easy Math Learning Videos
When we multiply whole numbers, we can show the multiplication using an array like the one shown here. This array shows the multiplication, 2 times 3.
The array is two blocks tall and three blocks wide.
We can show multiplication of a fraction times a whole number using the same kind of array.
Let’s change the first factor in this multiplication to a fraction.
Here we have the fraction 3 halves times the whole number 3. To show the fraction 3 halves, we start by dividing each whole unit on this side into halves, like this.
We show 3 halves here.
We show the whole number 3 here.
Now we draw the array.
We have three halves here, another three halves here, and three more halves here.
We can show that using repeated addition like this.
When we do the addition, we get 9 halves. That means that 3 halves times 3 is 9 halves.
Another example. Two times one third.
Here we have 2 blocks tall times one third of a block wide.
This can also be written as repeated addition. This time, we have the fraction one third, two times.
We write that like this.
One third plus one third.
We know this is equal to 2 thirds.
So, 2 times one third is two thirds.
Another example.
Six fifths times 4. We write this as repeated addition like this.
When we add, we get 24 fifths.
So six fifths times 4 is 24 fifths.
You probably noticed a pattern here. When we do the repeated addition in each case, the result of adding the numerators is the same result as multiplying the numerator of the fraction by the whole number.
Here, we added the numerator three, three times, and got 9.
That’s the same as multiplying 3 times 3 which is also nine.
Here, we added the numerator one, two times, and got 2.
That’s the same as multiplying 1 times 2, which is also 2.
Here, we added the numerator 6, four times and got 24.
That’s the same as multiplying 6 times 4, which is also 24.
So, to multiply fractions, we don’t have to do the repeated addition, we can just multiply the numerator times the whole number.
That gives us the numerator of the result.
The denominator stays the same.
Here’s an example. Four times three fifths. We multiply the numerator, which is three, times the whole number four, which gives us a numerator of 12.
And we keep the denominator.
So 4 times 3 fifths is 12 fifths.
Last example. Two fifths times 3. We multiply the numerator, 2, times the whole number 3, which gives us a numerator of 6, and the denominator stays the same.
The result is 6 fifths.
In the remainder of this lesson you’ll multiply whole numbers and fractions like these.
http://[a]www.ilearn.com%2Ffractions[/a]
https://youtu.be/BV-T6b7S9dc
For Free Practice Go To: http://[a]www.ilearn.com%2Ffractions[/a]
iLearn provides professionally designed math instruction for all markets, including home, K-12, and college. Our instructional programs combine the best scientifically-designed curriculum with state-of-the art delivery systems. Our specialty is providing easy-to-use, highly effective support, for students who have difficulty learning math. It’s the easiest and fastest way to understand math and master math procedures.
This video is one of over 800 similar lessons from iLearn on math topics ranging from kindergarten through high school math.
• Subscribe to our channel and have access to all of our lessons here on YouTube.
• Share this video with your friends via your favorite social site.
For free access to unlimited online practice and tests, along with free access to these lessons, go to:
http://[a]www.ilearn.com%2Ffractions[/a]
For more information, contact us at: www.ilearn.com
1-877-789-2088 ext. 128 (toll free)
If you prefer to read, rather than watch this video, here’s the transcript:
Title: Mixed Numbers as Improper Fractions - Fast And Easy Math Learning Videos
To change a mixed number into an improper fraction, first, multiply the whole units by the number of parts in each whole unit.
Then add the left over part
Seven and one-third is equal to twenty-two thirds
Here's another one. First, multiply the whole units by the number of parts in each whole unit.
Then add the left over part
Three and two-fifths is equal to seventeen-fifths.
Last one. First, multiply the whole units by the number of parts in each whole unit.
Then add the left over part
One and three-sixths is equal to nine-sixths.
http://[a]www.ilearn.com%2Ffractions[/a]
https://youtu.be/XtiTk1GmHCI
Go Here For Free Practice: http://[a]www.ilearn.com%2Ffractions[/a]
iLearn provides professionally designed math instruction for all markets, including home, K-12, and college. Our instructional programs combine the best scientifically-designed curriculum with state-of-the art delivery systems. Our specialty is providing easy-to-use, highly effective support, for students who have difficulty learning math. It’s the easiest and fastest way to understand math and master math procedures.
This video is one of over 800 similar lessons from iLearn on math topics ranging from kindergarten through high school math.
• Subscribe to our channel and have access to all of our lessons here on YouTube.
• Share this video with your friends via your favorite social site.
For free access to unlimited online practice and tests, along with free access to these lessons, go to:
http://[a]www.ilearn.com%2Ffractions[/a]
For more information, contact us at: www.ilearn.com
1-877-789-2088 ext. 128 (toll free)
If you prefer to read, rather than watch this video, here’s the transcript:
Title: Equivalent Fractions: Least Common Multiple (LCM)
You already know one way to find a common denominator for any two fractions and one way to find a common denominator for some fractions. In this and the next lesson, you’ll learn another way to find a common denominator for any two fractions. This method uses what is called the least common multiple. In this lesson, you’ll learn to find the least common multiple for two numbers. In the next lesson, you’ll learn to use the least common multiple as the common denominator for two fractions.
Consider these two numbers, 6 and 4. We want to find the smallest number that’s a multiple of each of these numbers. Let’s look at these numbers on a number line.
Let’s start with the multiples of 6. Six times one is 6.
Six times 2 is 12.
Six times 3 is 18.
Six times 4 is 24.
Now let’s look at the multiples of 4. Four times one is 4.
Four times 2 is 8.
Four times 3 is 12.
Four times 4 is 16.
Four times 5 is 20.
Four times 6 is 24.
Notice that there are two places where the multiples of 4 and 6 are the same. The first one is here, at 12.
Twelve is a multiple of both 6 and 4.
The second place where multiples of 4 and 6 are the same is here, at 24.
For our purposes, what we want is the smallest number that’s a multiple of both 6 and 4. That number is 12.
We call this the “least common multiple” of 6 and 4.
We can also find the least common multiple of two numbers without using a number line. Here’s an example, 5 and 4. First, we list several multiples of 5 in order:
Now we list several multiples of 4 in order.
We can see that there’s a common multiple, which is 20.
Since this is the smallest number that’s a multiple of both 5 and 4, this is the least common multiple.
Another example, 6 and 9. First, we list several multiples of 6
Next, we list several multiples of 9.
The smallest number that’s a multiple of both 6 and 9 is 18.
Last example, 2 and 9. First, we list multiples of 2.
Then we list multiples of 9.
The smallest number that’s a multiple of both 2 and 9 is 18.
In the remainder of this lesson, you’ll find the least common multiple of two numbers like these.
http://[a]www.ilearn.com%2Ffractions[/a]
https://youtu.be/JJwPxwY5NHo
En mulig metode når man skal foretage en division, hvor der både er decimaltal i divisor og dividend.
For at kunne benytte metoden er det en god idé at have styr på 2 ting:
1) Divisionsalgoritmen som vist i videoen Division 1 eller 2
Division 1 - https://www.youtube.com/watch?v=ndfFLgMCcNc&t
Division 2 - https://www.youtube.com/watch?v=JAdhWZOSPxw
2) Forlænge brøker
Forlænge og forkorte brøker - https://www.youtube.com/watch?v=ARhG2vC8KWI&t
( I denne kan man med fordel gå 5 min ind i videoen)
Potens - Potensopløftning - Hvad er en potens i matematik? - Lær hurtig hvordan man regner med potens? - Potensregneregler.
Videoen forklarer hurtigt og enkelt hvordan man regner med potens og rod i matematik.
Populært kaldet at sætte noget i anden, i tredje osv.
*HJEMMESIDER OM MATEMATIK* 😃 (Video med en kort præsentation af de enkelte sider her: https://www.youtube.com/watch?v=nHfq43oEgxg )
👉 https://mattip.dk/ - Gratis opgaver og kopiark.
👉 https://matematikbogen.dk/ - Print let opgaver om plus, minus, gange og dividerer gratis.
👉 https://www.gratisskole.dk/ - Masser af gratis skolerelevante opgaver.
👉 https://www.legoglektie.dk/ - Hjemmeside med skolematerialer til børn fra 2-13 år. Gratis at bruge for private.
👉https://www.matematikbanken.dk/side/kompendier/ - Blandet opgaver målrettet 9-10 klasse.
👉https://www.opgaveskyen.dk/ - Opgaver til mange af folkeskolens fag. Klar til print.
👉https://undervisningsforlob.dk/matematik - Matematikopgaver og små spil klar til print. Målgruppe 5-12 år.
👉https://www.printland.dk/sjov-med-tal.aspx - Print opgaver til de helt små børn (børnehave og tidlig indskoling).
*BUTIKKER*
👉 *Reklamelink* - https://www.partner-ads.com/dk/klikbanner.php?partnerid=46683&bannerid=69642 - Online-butik hvor man kan købe *piktogrammer,* læringsspil, opgaver, tavler, legetøj og læringscirkler. *Stort udvalg*
👉 *Reklamelink* - https://www.partner-ads.com/dk/klikbanner.php?partnerid=46683&bannerid=64474&htmlurl=https://www.laerlet.dk/butik/ - Online-butik med materialer der via leg og læring træner tal og bogstaver.
*APPS*
👉 *Reklamelink* - https://track.adtraction.com/t/t?a=1646486406&as=1772625203&t=2&tk=1 - *SUPER GOD matematikapp* til de mindste. Gratis prøveperiode.
*LEKTIEHJÆLP*
👉 *Reklamelink* - https://www.partner-ads.com/dk/klikbanner.php?partnerid=46683&bannerid=95261 - *LEKTIEHJÆLP* både til folkeskole og gymnasie niveau - *Prøv gratis 👩🎓*
👉 *Reklamelink* - https://www.partner-ads.com/dk/klikbanner.php?partnerid=46683&bannerid=76792 - BOOST dine matematikevner med et matematikforløb eller lektiehjælp.
*LÆRINGSCAMP*
👉https://www.dincamp.dk/camps/matematikcamp/ - Tag på camp i din ferie: Et sjovt fagligt boost i matematik (eller andre fag)
#Matematik
#Potens
#PotensRegneregler
#Potensopløftning
#PotensOgRoden
#UNIKSkole
#IAnden
#Regn
#RegnIAnden
#Lektier
#Lektiehjælp
Kvadrattal - Hvad er et kvadrattal?
Få svaret og en let enkelt forklaring her :)
Lær hvad et kvadtal er og hvad der kendetegner det. Videoen arbejder med forståelse samt eksempler.
Folkeskolematematik
3. Klasse matematik
4. Klasse matematik
5. Klasse matematik
6. Klasse matematik
7. Klasse matematik
8. Klasse matematik
9. Klasse matematik
*HJEMMESIDER OM MATEMATIK* 😃 (Video med en kort præsentation af de enkelte sider her: )
👉 https://mattip.dk/ - Gratis opgaver og kopiark.
👉 https://matematikbogen.dk/ - Print let opgaver om plus, minus, gange og dividerer gratis.
👉 https://www.gratisskole.dk/ - Masser af gratis skolerelevante opgaver.
👉 https://www.legoglektie.dk/ - Hjemmeside med skolematerialer til børn fra 2-13 år. Gratis at bruge for private.
👉https://www.matematikbanken.dk/side/kompendier/ - Blandet opgaver målrettet 9-10 klasse.
👉https://www.opgaveskyen.dk/ - Opgaver til mange af folkeskolens fag. Klar til print.
👉https://undervisningsforlob.dk/matematik - Matematikopgaver og små spil klar til print. Målgruppe 5-12 år.
👉https://www.printland.dk/sjov-med-tal.aspx - Print opgaver til de helt små børn (børnehave og tidlig indskoling).
*BUTIKKER*
👉 *Reklamelink* - https://www.partner-ads.com/dk/klikbanner.php?partnerid=46683&bannerid=69642 - Online-butik hvor man kan købe *piktogrammer,* læringsspil, opgaver, tavler, legetøj og læringscirkler. *Stort udvalg*
👉 *Reklamelink* - https://www.partner-ads.com/dk/klikbanner.php?partnerid=46683&bannerid=64474&htmlurl=https://www.laerlet.dk/butik/ - Online-butik med materialer der via leg og læring træner tal og bogstaver.
*APPS*
👉 *Reklamelink* - https://track.adtraction.com/t/t?a=1646486406&as=1772625203&t=2&tk=1 - *SUPER GOD matematikapp* til de mindste. Gratis prøveperiode.
*LEKTIEHJÆLP*
👉 *Reklamelink* - https://www.partner-ads.com/dk/klikbanner.php?partnerid=46683&bannerid=95261 - *LEKTIEHJÆLP* både til folkeskole og gymnasie niveau - *Prøv gratis 👩🎓*
👉 *Reklamelink* - https://www.partner-ads.com/dk/klikbanner.php?partnerid=46683&bannerid=76792 - BOOST dine matematikevner med et matematikforløb eller lektiehjælp.
*LÆRINGSCAMP*
👉https://www.dincamp.dk/camps/matematikcamp/ - Tag på camp i din ferie: Et sjovt fagligt boost i matematik (eller andre fag)
#Matematik #KvadratTal #Potens #Folkeskolen #Lektier #Lektiehjælp #3klasse #4klasse #5klasse #6klasse #7klasse #8klasse #9Klasse #Kvadrat #LærLetMatematik #KvadratTalLigeLangeSider #Skole #SkoleHjælp #UNIKSkole
Unlock the mysteries and inner workings of the world through one of the most imaginative art forms ever -- mathematics -- with Roger Antonsen, as he explains how a slight change in perspective can reveal patterns, numbers and formulas as the gateways to empathy and understanding.
TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more.
Find closed captions and translated subtitles in many languages at http://www.ted.com/translate
Follow TED news on Twitter: http://www.twitter.com/tednews
Like TED on Facebook: https://www.facebook.com/TED
Subscribe to our channel: http://www.youtube.com/user/TEDtalksDirector
