View entire discussion
[<< prev] [ next >>]
From: Anne Collins To: Teacher2Teacher Public Discussion Date: 2000111213:51:38 Subject: Re: Enrichment One nice strategy for the students to develop an understanding is to give them a chip board or algeblocks (on a mat) that is divided into two sections, one positive and one negative negative zero positive Have them place 4 blocks or chips on the negative side representing -4 now ask them to take away - 3 what is left is -1. have them place 4 blocks or chips on the negative side again representing -4 this time have them take away 3...they cannot because there are no positive chips or blocks on the mat...they must add 3 zero pairs to do this(a zero pair is a -1 and a +1) after the zero pairs are placed there are 7 chips or blocks on the negative side and 3 on the positive side...when the kids take away 3 they see there are a -7 remaining. Kids that do this many times are able to see for themselves rather than trusting us to explain. Hope you try this...works great with my students for years.
Math Forum Home || The Math Library || Quick Reference || Math Forum Search