add 3 digit with regrouping and sub 2 digit regrouping - ProTeacher Community




Home Join Now Search My Favorites
Help


      Special Education

add 3 digit with regrouping and sub 2 digit regrouping

>

Reply
 
Thread Tools
Jean Jean is offline
 
Joined: Oct 2005
Posts: 55
Junior Member

Jean
 
Joined: Oct 2005
Posts: 55
Junior Member
add 3 digit with regrouping and sub 2 digit regrouping
Old 02-11-2012, 12:43 PM
 
Clip to ScrapBook #1

I have a 15-year student with significant cognitive delay and short-term memory. I am trying to teach her how to add 3 digit numbers with regrouping and subtracting two digit numbers with regrouping, what can I do?


Jean is offline   Reply With Quote

Miller's Avatar
Miller Miller is offline
 
Joined: Oct 2005
Posts: 11,965
Senior Member

Miller
 
Miller's Avatar
 
Joined: Oct 2005
Posts: 11,965
Senior Member

Old 02-11-2012, 01:29 PM
 
Clip to ScrapBook #2

have you tried using base 10 blocks to show the change from ones-tens-hundreds?

why can't she just use a calculator?

is she having problem lining the numbers up?
Miller is offline   Reply With Quote
GreyhoundGirl's Avatar
GreyhoundGirl GreyhoundGirl is offline
 
Joined: Nov 2008
Posts: 19,463
Senior Member

GreyhoundGirl
 
GreyhoundGirl's Avatar
 
Joined: Nov 2008
Posts: 19,463
Senior Member

Old 02-11-2012, 01:43 PM
 
Clip to ScrapBook #3

I was going to suggest base-10 blocks as well. It worked really well with my elementary students.

As for lining up, I have mine use grid paper. You can go online and find large grid paper with plenty of room for them to write.
http://math.about.com/od/worksheets/ss/Grids_7.htm

P.S. I love math.about.com!
GreyhoundGirl is offline   Reply With Quote
newspedteach newspedteach is offline
 
Joined: Jun 2007
Posts: 2,809
Senior Member

newspedteach
 
Joined: Jun 2007
Posts: 2,809
Senior Member
I'm wondering
Old 02-11-2012, 04:01 PM
 
Clip to ScrapBook #4

Why this would be an important skill to teach this student? I'm not being a smart-a$$, I'm serious. Teach her how to use a calculator.
newspedteach is offline   Reply With Quote
Miller's Avatar
Miller Miller is offline
 
Joined: Oct 2005
Posts: 11,965
Senior Member

Miller
 
Miller's Avatar
 
Joined: Oct 2005
Posts: 11,965
Senior Member

Old 02-11-2012, 09:31 PM
 
Clip to ScrapBook #5

along with what greyhound girl suggested, I recently just turned looseleaf paper on its side to have the kids line up in columns. I might need large grid paper for some of my kids.


Miller is offline   Reply With Quote
GreyhoundGirl's Avatar
GreyhoundGirl GreyhoundGirl is offline
 
Joined: Nov 2008
Posts: 19,463
Senior Member

GreyhoundGirl
 
GreyhoundGirl's Avatar
 
Joined: Nov 2008
Posts: 19,463
Senior Member

Old 02-12-2012, 02:57 PM
 
Clip to ScrapBook #6

Newspedteach-for me it's a number sense thing (and some of my kids have it as goals for their IEP's-don't ask, stupid system). I think they need to understand regrouping and borrowing to understand basic place value, etc.

It also carries over to multi-digit multiplication in 4th grade.

How long can we just say "hand them a calculator"? This is why we have teenagers manning cash registers unable to hand back correct change on their own; they have no basic number sense.
GreyhoundGirl is offline   Reply With Quote
mammajam's Avatar
mammajam mammajam is offline
 
Joined: Jun 2010
Posts: 89
Junior Member

mammajam
 
mammajam's Avatar
 
Joined: Jun 2010
Posts: 89
Junior Member
addition and subtraction with regrouping
Old 02-12-2012, 04:25 PM
 
Clip to ScrapBook #7

I teach 3rd grade and my students and I love virtual manipulatives--just google it--choose base ten blocks for addition and base ten blocks for subtraction. It actually moves the blocks as you carry or borrow and shows the number model as well. Hope this helps!
mammajam is offline   Reply With Quote
newspedteach newspedteach is offline
 
Joined: Jun 2007
Posts: 2,809
Senior Member

newspedteach
 
Joined: Jun 2007
Posts: 2,809
Senior Member

Old 02-12-2012, 06:20 PM
 
Clip to ScrapBook #8

Quote:
15-year student
Quote:
with significant cognitive delay and short-term memory
I'll ask again. How is this an important skill for a student who is likely in a lifeskills program? I'm assuming this, as she does not have even 4th grade math skills at 15.

Quote:
How long can we just say "hand them a calculator"?
Do you use a calculator, or add/subtract multi digit numbers by hand? IEP goals must be important and vital for that individual student. This doesn't sound like an important skill to work on at this time, for this student. Of course, I am going by the brief post and have no idea what her evaluation says.

Quote:
This is why we have teenagers manning cash registers unable to hand back correct change on their own; they have no basic number sense.
When was the last time you had a cashier count back change? I was just talking about this with my husband and we couldn't think of a time in recent history. The cashier simply scans items and the machines do the work for them. Our grocery store has had power outages and have had to turn people away, as they can't even take money when the power is off. In addition, most people use debit or credit cards.

This student would be much better off being taught how to read and some life skills. To the OP, good luck with your student!
newspedteach is offline   Reply With Quote
hiker1 hiker1 is offline
 
Joined: Feb 2007
Posts: 2,602
Senior Member

hiker1
 
Joined: Feb 2007
Posts: 2,602
Senior Member

Old 02-14-2012, 05:45 PM
 
Clip to ScrapBook #9

Look into TouchMath. They have good visuals that help students. I haven't had much luck with base ten blocks but I have used popsicle sticks. I bundled zillions of them into groups of tens. Then I use the bundles and indivdual sticks to show various numbers. When it comes to regrouping the students actually take a bundle of sticks, take the rubber band off and it becomes 10 ones instead of 1 ten. ( same thing with addtion. They take 10 ones and bundle them to make 1 ten.) I have found this method to really help them grasp the concept of regrouping since they actually do it themselves. Goodluck.
hiker1 is offline   Reply With Quote
Busy_Lil_Bee's Avatar
Busy_Lil_Bee Busy_Lil_Bee is offline
 
Joined: Jun 2007
Posts: 510
Senior Member

Busy_Lil_Bee
 
Busy_Lil_Bee's Avatar
 
Joined: Jun 2007
Posts: 510
Senior Member
subtraction
Old 02-15-2012, 08:54 PM
 
Clip to ScrapBook #10

One of the gen.ed teachers taught me this and it has REALLY helped my kids with subtracting 2-digit numbers with regrouping.

Look at the ones column...
If there's more on the floor, go next door.
If there's more on the top, stop.

After they decide if there's more on the floor or top, they "knock" on the door and borrow or stop. Then they use a number line to subtract.

Maybe this will help.


Busy_Lil_Bee is offline   Reply With Quote
kimberly222 kimberly222 is offline
 
Joined: Mar 2010
Posts: 3
New Member

kimberly222
 
Joined: Mar 2010
Posts: 3
New Member

Old 02-23-2012, 02:21 PM
 
Clip to ScrapBook #11

I use the same saying:

More on the top? No need to stop!
More on the floor? Go next store and get 10 more!
kimberly222 is offline   Reply With Quote
grace slick's Avatar
grace slick grace slick is offline
 
Joined: Sep 2009
Posts: 321
Full Member

grace slick
 
grace slick's Avatar
 
Joined: Sep 2009
Posts: 321
Full Member
regrouping
Old 03-10-2012, 05:51 PM
 
Clip to ScrapBook #12

Well, as it was stated earlier, at 15 a student needs to either learn to use a calculator, or come up with a nemonic
Try BBB (the bumble bee buzzzzzzzz-for the smaller kids)
or BBB Bottom is Bigger you Borrow (oops that's right you aren't suppose to use borrow anymore )
Just remember those of us who teach special education have been there before.
Also, Touch Math is really effective for those who have no number sense
Good Luck
grace slick is offline   Reply With Quote

Join the conversation! Post as a guest or become a member today. New members welcome!

Reply

 

>
Special Education
Thread Tools




Sign Up Now

Sign Up FREE | ProTeacher Help | BusyBoard

All times are GMT -8. The time now is 08:23 AM.

Copyright © 2019 ProTeacher®
For individual use only. Do not copy, reproduce or transmit.
source: www.proteacher.net