Great Math Products!

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Base Ten Number Line

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Multiplication Tricks

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Doubles

ThreeFingers with Numbers

Telling Time Misconceptions

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Equivalent Fractions

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Simplifying Fractions

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Clock Fractions

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Math Fact Motivation

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Math Night 2012

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Bulletin Board Ideas

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Classroom Management

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Lines and Angles

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Freebies

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I get the cutest handwriting fonts at Fonts for Peas! kevinandamanda.com/fonts
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Subtraction

What Do You Do in Your Math Intervention Group?

So, I have a math intervention group.  I have done intervention lots of ways…and the thing is, there are always core things that kids struggle with.  Those things without a double are always addition, subtraction, and multiplication facts.  Next, they struggle with the standard regrouping algorithm.  And, why do they struggle? BECAUSE, of course, no one sits with them at home to help them learn these things if the concepts don’t sink in during school time.

Enter me.  I have been working with some students the past few weeks on subtraction regrouping…with success!  Here is what I have done, and what I have discovered.  First of all, several of the intervention students were able to regroup UNTIL they had to regroup across zeros.  They weren’t sure what to do when they had to borrow two places over.  How did I figure this out you ask?  Well, with my group of four students, I gave them a worksheet. (gasp!  a worksheet??!!) Yes, I gave them a worksheet and had them work a few and checked to see which ones they were getting correct and which ones they were missing.  I would have them work one problem and hand me the sheet to check.  This way they were getting immediate feedback.  During this time, I realized that they weren’t getting the answers right unless they borrowed across zeros or had to borrow two places over.  I used and am so thankful for Super Teacher Worksheets subtraction worksheet generator!  This conveniently allowed me to print a new worksheet (complete with answer key) when I felt they needed practice.

 

Now when I realized they needed help with regrouping across zeros, I realized there was a regrouping misunderstanding.  So, I used the Singapore math number discs method to show them what was happening when they were regrouping.  After showing them and having them do one with me, the next day they performed a lot better on their subtraction regrouping problems.  I have a SMART board lesson and worksheets if you would like some for students to practice with.  The grid is already made for the students…these however do not have seven digits like the worksheet above.

A few other things I did to help the students think about the regrouping process were.

  1.  Say this little rhyme…”More on the floor, go next door, and get 10 more”.  This way they would always know they were bringing ten over…not 9, not 8.
  2. Sometimes when students want to skip over a place value column, I would describe it as driving in traffic.  Your car doesn’t just fly over the other column, it has to change lanes one at a time…it can’t be a helicopter.
  3. Another idea I mention is place value columns in relation to the drawers in a cash register.  If you cash in your $100 bill for others, you trade it in for 10 $10, then you trade in the $10 for 10 $1 bills.

Try these things and soon you will be on your way to having expert subtraction regroupers!

How to Set Up an IKnowIt Account (free)!

Guess what?!  Have you heard about this great new math website?!  There are math lessons set up for kindergarten through 5th grade.  Students are given a score for problems they get right so that you could potentially use this for a quick grade. Winning!  Right now you can set up an account for your class absolutely free–until August 2018 that is!  In the following video, I show you how to set up your free account and how to assign lessons to your students.

Adding & Subtracting Ten(s)–1st Grade Skill or Intervention?

There are certain skills that if not learned early in math will be a detriment throughout a student’s entire math career.  Learning to add ten or subtract ten is one of these skills. In later elementary grades, if the simplistic skill of adding and subtracting ten is not learned students will struggle with other math concepts.

For these reasons, I believe that is why this product is one of the best sellers in my shop.  The skill of adding or subtracting ten is visually taught through patterns on the hundreds chart.  I have newly revised this product to include answer keys, new borders, and new fonts.  If you are looking for a product to teach your students to add or subtract ten— a skill they will need for their entire school career, look no further.

A Discovering Patterns worksheet with the hundreds chart and Mental Math Fluency Check are included in this packet for each of the following:
*Adding 10 to a One-Digit Number
*Adding 10 to Multiples of 10
*Subtracting 10 from Multiples of 10
*Adding 10 within 100
*Subtracting 10 within 100
*Adding Multiples of 10 within 100
*Subtracting Multiples of 10 within 100

Answer keys are also included.

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