TA chat forum Forum Index TA chat forum

 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

multiply and divide by 10 /100

 
Post new topic   Reply to topic    TA chat forum Forum Index -> Numeracy
View previous topic :: View next topic  
Author Message
KPNUT
Class monitor
Class monitor


Joined: 26 Sep 2006
Posts: 52
Location: West Midlands

PostPosted: Tue Jan 01, 2008 4:16 pm    Post subject: multiply and divide by 10 /100 Reply with quote

Hi hapy new year to everyone.

Have to teach small group of year 5s how to multiply and divide by 10 and 100. This will be in 15 minute bursts throughout the week about 3 times a week until they get it. Will probably have access to a whiteboard and ICT suite.

Any ideas, cant find any games for them to play, thought about playing bingo after first showing them the principles etc. Have found some Powerpoint displays especially on Primary Resources.
Many thanks.
Back to top
View user's profile Send private message
kitkat
Class monitor
Class monitor


Joined: 30 Oct 2005
Posts: 185
Location: East Sussex

PostPosted: Sat Jan 05, 2008 11:35 am    Post subject: Reply with quote

I am having to do the same task. I will get them to physically jump to the left and to the right. I will have TH H T U written in columns on the whiteboard and get them to stand beneath them in the correct place. I will then get a child to 'deliver' a times sign and a zero and ask them to move along to the correct place. when they are confident with that i will then deliver a division sign and get them to move. then move on to 100.
Back to top
View user's profile Send private message
hollyw
Top poster
Top poster


Joined: 18 Oct 2007
Posts: 1497

PostPosted: Sat Jan 05, 2008 11:42 am    Post subject: Reply with quote

Have you used the rhyme

If you times by 10
You write the number again
and add a nought.

I have found chanting this in various fun ways often gets the message across. I usually leave a pause between the write the number again then say the last line in a different way (fast, slow, silly voice, actions, each child in turn saying the line after everyone says the rest etc).

Good luck
Back to top
View user's profile Send private message
KPNUT
Class monitor
Class monitor


Joined: 26 Sep 2006
Posts: 52
Location: West Midlands

PostPosted: Sat Jan 05, 2008 11:44 am    Post subject: Reply with quote

great idea, thanks, have more ideas now,

use calculators
I am who is game
I have a double dice we can roll
around the world
etc
Back to top
View user's profile Send private message
zx
Teachers Pet
Teachers Pet


Joined: 24 Jul 2006
Posts: 393
Location: London

PostPosted: Sun Jan 13, 2008 10:18 pm    Post subject: Reply with quote

we did this a while back last term

do the children understand place value?

Th H T U

Show them that by moving the digits to the left or right is the same as multiply or dividing by 10. Start with smal numbers and work upwards.
Back to top
View user's profile Send private message
dadenuk
Moderator
Moderator


Joined: 08 Dec 2005
Posts: 9126

PostPosted: Mon Jan 14, 2008 10:29 am    Post subject: Reply with quote

hollyw wrote:
Have you used the rhyme

If you times by 10
You write the number again
and add a nought.

I have found chanting this in various fun ways often gets the message across. I usually leave a pause between the write the number again then say the last line in a different way (fast, slow, silly voice, actions, each child in turn saying the line after everyone says the rest etc).

Good luck


Please don't do it like that...

you're not adding a zero, you're moving the numbers one/two places to the left (multiplying) or right (dividing)...

by all means use rhyme to reinforce the concept, but it is important not to confuse the issue.

Apologies in advance if this is what you're doing, from your post it wasn't clear if you were just saying 'add a nought' when multiplying by ten Confused

_________________
A clever person solves a problem.
A wise person avoids it.
Back to top
View user's profile Send private message
hollyw
Top poster
Top poster


Joined: 18 Oct 2007
Posts: 1497

PostPosted: Mon Jan 14, 2008 4:52 pm    Post subject: Reply with quote

Sorry Embarassed Reading back it is confusing.

The rhyme is used to reinforce the concept not as the first or the main teaching tool. It helps some children to remember that the numbers do move to the left.

Sorry for any confusion. Must read more carefully in future.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    TA chat forum Forum Index -> Numeracy All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Powered by phpBB © 2001, 2005 phpBB Group

Abuse - Report Abuse
Powered by forumup.org free forum, create your free forum!
Created by Raulken of Hyarbor S.r.l.
TOS & Privacy.

Page generation time: 0.05