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# Math Update Week 7

October 21, 2018 by Kim Sorensen & Rebecca Farley

Hello 3rd and 4th Grade Families!  We found out this week that our IXL login link is different.  When you are logging in to IXL, please use the following link and then use your child’s same IXL log in information.

New IXL Link:  https://www.ixl.com/signin/oasis

4th Grade:

We are a little over half way through the trimester.  As far as math facts go, your child should have passed off at least 4 assessments.  If your child has not done this, I will be contacting you personally to help make a plan for your student to be successful with this. Please be sure to be practicing only one math factor until they pass it off.  For example, if they are trying to pass their 3s, then they would only practice their 3 math facts, every night, until they pass.

This week we learned the traditional algorithm of addition and subtraction.  I thought the kids did very well transitioning to this method.  I was impressed with how they could explain what they were doing as they worked across the different place values.  This week we will continue to practice this skill and take their test on Wednesday.  On Thursday we will move on to talk about factors and prime and composite numbers.

Questions to ask your child this week:

• Show me how you do the standard/traditional algorithm of addition and subtraction.
• What does it mean when you are regrouping while using the standard algorithm of subtraction?
• Give them sample problems!!!

IXL’s that match this week’s instruction:  IXL B.1,B.2, B.3, C.1,C.2,C.3

3rd Grade:

We are a little over half way through the trimester.  As far as math facts go, your child should have passed off at least 3 assessments.  If your child has not done this, I will be contacting you personally to help make a plan for your student to be successful with this. Please be sure to be practicing only one math factor until they pass it off.  For example, if they are trying to pass their 3s, then they would only practice their 3 math facts, every night, until they pass.

This week we worked with using partial differences to solve subtraction problems.  This is a tough, multi-step strategy that teaches the students so much!  I love watching them figure numbers out, both positive and negative!  We will continue to practice and then take a test on addition and subtraction this Wednesday.  If you would like to see a video using this strategy, here is the link! https://sites.google.com/oasisacademyfallon.us/3rd4thmathvideos/addition-and-subtraction On Thursday we will move on to talk about multiplication.

Questions to ask your child this week:

• The best thing you can do is work through problems with your child and have them explain what they are doing as they go!  They need practice, practice, practice!

IXL’s that match this week’s instruction:  IXL  C.1,C.2,C.3,C.4,D.1, D.2, D.3, D.4