Where are some good places to find resources for teaching regrouping, addition, and subtraction?

Question

For a second grader

Answer 1

My personal favorite site for all maths is the BBC.  They have great revision information and quizzes where you can practice what youve learned.  Another good site is Rainbow Maths which has maths exercises for each grade level. (Australian)

Answer 2

You can also teach it using groups of straws or popsicle sticks.

This site has some additional info:

http://www.busyteacherscafe.com/units/ad...

Hope this helps!

Answer 3

I just did a web search and found one that I am going to use tomorrow with my son.

http://www.kidport.com/Grade2/Math/Numbe...

Hope you like it...it is really neat!

Tracy

Answer 4

We started with homemade resources.  

We took beans and popsicle sticks.  Glue 10 beans to each popsicle stick; these "bean sticks" stand for 10's while individual beans stand for 1's.  So for the number 40, use 4 bean sticks.  For the number 53, use 5 bean sticks and 3 individual beans.

To do addition, take a sheet of paper and draw a line down the middle.  Label the left side "tens" and the right side "ones."  Have the child then use the beans and bean sticks to show the problem. Any time he ends up with ten or more beans in the ones column, he should trade (or regroup) 10 beans for a bean stick.

We did this first, with just the beans.  Then with numbers and beans, until my child didn't want to bother with the beans anymore.  By that point, he understood the process and knew why regrouping worked.

Similarly with subtraction, set up a number with beans and bean sticks.  Then take away the number of beans and bean sticks that are being subtracted.  If there aren't enough individual beans, trade a bean stick in for 10 individual beans.

You can take 10 bean sticks and glue popsicle sticks across their backs to make bean squares that represent 100, if you need to, also.

(Toothpicks grouped with tiny rubberbands around them work well instead of beansticks.  Or use any other manipulative that comes to mind.)

Once the child gets the idea, then it's a matter of practice, practice, practice, until he can do it easily on paper.