- How do I teach a year 3/4 kid Direct proportion? This is the type of question
** If 6 is to 4, then 15 is to what? ** - Which of the following is not in direct proportion with the other 3?
A. 45 B.50 C.9 D.10
3. A car travels at 52km/hr, how far will it travel in 45 mins? (I need help trying to explain the method)
52km = 60mins [Find how many km in 1 minute -> 52/60 (Distance = Speed/time)
0.8km = 1min
______= 45mins
Using the Speed = Distance X Time;
Speed = 0.8 X 45
= 360
BUT How do I get rid of the 0 at the end of 36 is the answer?
4. 4 scarves cost the same as 7 pairs of gloves. How many scarves can 35 pairs of gloves buy?****(I need help trying to explain the method and WHY I am multiplying 5 on both sides) LET ME KNOW IF THERE ARE OTHER WAYS TO SOLVE THIS PLEASE!!
X 5 4s = 7g X5
20s = 35g
Therefore, 20 scarves.
6.** The area of 2 squares form a ratio of 3;8. If the smaller square has a side length of 6, what is the area of the larger square? **
#YEAR 4 TEACHING - HELP
raven zenith
dawn lanternBOT
cinder flare
1. How do I teach a year 3/4 kid Direct proportion? This is the type of question...
BUT How do I get rid of the 0 at the end of 36 is the answer?
0.8 * 45 = 36, not 360
Generally, for 3), you could just say it'll be 52 * 3/4
raven zenith
0.8 * 45 = 36, not 360
Wait is it because I forgot to put the decimal back in. I took the decimal out before/
cinder flare
Wait is it because I forgot to put the decimal back in. I took the decimal out b...
You probably multiplied 8 * 45, that's 360, then put the decimal, making it 0.8 * 45, but forgot to remove a zero
raven zenith
Nah nah. I took the decimal out by multiplying 10 on both sides, meaning that 45 would be 450
cinder flare
Speed = 0.8 * 45
If you multiply by 10 on both sides, you get
10Speed = 8 * 45
10Speed = 360
cinder flare
8 * 45?
cinder flare
One way is to say 0.8 = 4/5
Now $0.8 \cdot 45 = \frac45 \cdot 45 = \frac{4}{\cancel 5} \cdot \cancel5 \cdot 9 = 4 \cdot 9 = 36$
cinder flare
raven zenith
Is 0.8 equal to 4/5?
cinder flare
Yes
cinder flare
Is 0.8 equal to 4/5?
$0.8 = \frac{8}{10} = \frac45$
coarse trenchBOT
Kepe
raven zenith
Hahaha IM STUPIDD
cinder flare
Another way would be to directly multiply it
0.8 * 45 = 0.8 * (40 + 5) = 0.8 * 40 + 0.8 * 5
0.8 * 40 = 8 * 4 = 32
Now 0.8 * 5 = (8 * 5)/10 = 4
So 32 + 4 = 36
raven zenith
I don't think the year 4 will understnad that
cinder flare
ok
cinder flare
BUT I will try the fraction method
Overall the more straightforward way to answer this question is to multiply 52 * 3/4
Since 45 minutes is 3/4 of an hour
cinder flare
WHY I am multiplying 5 on both sides
"We want to get 35g on the right side, because the question asks how many scarves we can buy with 35 gloves. So what do we do to get 35g instead of 7g on the right side (maybe let the people think for a second) -> We multiply both sides by 5!"
cinder flare
Maybe for 4) it would be more visual to some kids if you say "Ok, I have 7 gloves, I get 4 scarves. Now let's say I have 14 gloves. How many scarves do I get? 8, because I can do this twice. Now I have 21. Then I get 12, ..."
raven zenith
Ahh yeahh
Because for some questions, I was able to ask them what is 1 of something and they would get it. I couldn't do it with this question though
raven zenith
Maybe for 4) it would be more visual to some kids if you say "Ok, I have 7 glove...
But yeah, that would make alot of sense
cinder flare
Well you can ask "what of a fraction is one glove of a scarve?" and then you get 1g = 4/7s, but not sure how visual that is..
cinder flare
But yeah, that would make alot of sense
And that could motivate the multiplying by 5 on both sides
Saying "now we can do this 5 times"
raven zenith
Ahh okok
cinder flare
1. How do I teach a year 3/4 kid Direct proportion? This is the type of question...
"The area of 2 squares form a ratio of 3;8. If the smaller square has a side length of 6, what is the area of the larger square?"
So here, maybe make an example, like if the smaller square has area 3, then the larger square will have area 8. If the smaller square has area 6, then the larger square will have area 16 and so on
So we have a way of telling what the area of the large square is if we have the area of the small square
The small square has side lengths 6, so its area is 6 * 6 = 36
cinder flare
So here, maybe make an example, like if the smaller square has area 3, then the ...
So, motivating it by this, we have 36:96
So the area of the larger square is 96.
raven zenith
@cinder flare Thank you
Woudl you be able to help me find an alternative to explaining these types of questions ?
The total cost of 5 cauliflower and 2 rock melons is $22.50. A rock melon costs twice as much as a cauliflower. Find the cost of the cauliflower.
This is what I've taught to my class but the other question had 3 equations set up for the solutoin
I wonder if I'm a bad teacher or they aren't smart enough to understand yet...
wooden minnow
Primary school kids in my area learn a model method
Basically you draw the units out
So 5 cauliflowers and two Rock melons
And then they also include the fact one rock melon is two cauliflower units
Then they can see 22.50 is the price of 9 cauliflowers
And just do 22.50/9
If you wanna know more https://jimmymaths.com/singapore-math-model-method/
raven zenith
Primary school kids in my area learn a model method
Sweet! Thank you so much!! I'll read it in a few hours :))
raven zenith
That is really cool. Thank you for sharing this to me
dawn lanternBOT
That is really cool. Thank you for sharing this to me
If you are done with this channel, please mark your problem as solved by typing .close
wintry trellis
.close