Ella

This is the first year for Singapore math in our school. I am a second grade teacher and need some ideas on how to catch these kids up who have not had Singapore math in first grade. We are going very slow in each chapter but I am wondering how much number bond work we should do. The 2nd grade book has 2 pages, that's it!!!! I am about to complete subtraction with regrouping to the hundreds place and have a chapter on bar modeling coming up. What are some ideas others used their first year to come on board? How slow did you go?



Here's My Answer
by Zach
(Singapore)

I would say you can go as fast as your kids can cope with. Nobody knows your kids better than yourself. You spent the most amount of time with your kids on a daily basis. You see them learn, make mistakes, correct their mistakes, and then grow from strength to strength.

I advise most grade 2 teachers to use lots of concrete materials (different types you could get hold of) to allow the kids to strengthen their mastery of number bonds. You can use things like counters, buttons, coins, ice-cream sticks, straws, toothpicks, pencils, erasers, bottle caps, paper clips, rubber bands, used parking coupons, toys, lego bricks, name cards, sheets of colored papers, coasters, small cups, etc. The list goes on, use anything and everything you can get hold of that is easy to get and not too messy to be used in class.

I would say the training in the mastery of number bonds will go on as long as the child needs it. However, you cannot devote all your time to it as other chapters are coming up and requires you to devote as much, if not more, attention to. So, keep moving on in the chapters but do slot it 1 or 2 number bond activities as and when you deem fit.

The training of the ability to draw bar models to solve math problems is what you should also devote more attention to as the models they learn at grade 2, namely the comparison and part-whole models will form the foundation in future models they will learn at higher grades.

Hope that helps, let me know if you need further clarifications.


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Nov 16, 2011
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Bar Model Ideas
by: Ella

I really stressed the part/part whole concept and we even made achor charts to hang in the room to reinforce the method(with illustrations). I see them looking at these when we are working on bar models. I also made up more work problems with the names of people in our school, they really got into this. The Math on Focus did not have enought practice of us. I stayed on this concept a long time and we still do a few each day.

If they know the whole and a part - subtract
If they know part/part then - add


Nov 16, 2011
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Addition and subtraction models
by: Zach

You need to help your kids master the 2 main concept model, namely the comparison model and the part-whole model, at grade 2. From these 2 models, they must also be taught how to decide if the model is an addition or subtraction model.

For example, in a part-whole model, if 1 part and the whole is known, then this is a subtraction model. This is because we need to subtract the part from the whole to get the second part. However, if the 2 parts are known, then, we need to add them up to find the whole, hence an addition model.

Nov 12, 2011
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What about kids who just can't grasp model drawing, mainly trying to decide whether to add or subtract to get final answer?
by: Jan

My kids understand the process of model drawing but some can't decide whether to add or subtract to find the answer. Any suggestions?

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