Re: Box Method for teaching pos. and neg. no's
Use red and black arkers. Use small numbers. Use red dashes
(-) for negative. Use black pluses (+) for positive. Put the
parallel to each other as you explain positive nd negative
numbers. - - - - - - - - - -9 + (+6)=
+ + + + + +
Tell them that red cancels black. Cross out the red and black
pluses and minuses until you have only one sign left. Ask
them to countthe signs left and what the answer is based on
the number and sgin. REmindthem that when you add positive
and negative numbers, they should always use the sign in
front of the larger number. The visual on the board
reinforces that statement.
On 10/31/09, Interventiongal wrote:
> I'm teaching 7th grade math intervention. Have any of you
> tried using the box method for teaching addition and
> subtraction of positive and negative no's? Do you have any
> other methods of teaching this besides using a no. line?
Thanks!
Posts on this thread, including this one
- Box Method for teaching pos. and neg. no's, 10/31/09, by Interventiongal.
- Re: Box Method for teaching pos. and neg. no's, 11/01/09, by RRoomTeach.
- Re: Box Method for teaching pos. and neg. no's, 11/07/09, by Michael Murphy.
