Addition And Subtraction Problem Solving

Addition And Subtraction Problem Solving-38
You’ll see how I sometimes gave students copies of the model that they could glue into their notebook and sometimes students drew their own model.They need to be responsible for choosing what works best for them. Teach the strategies first through the use of math fact practice, before applying it to word problems so that students understand the strategies and can quickly choose one to use. Once students have some fluency in a few strategies, have them choose strategies that work for different problems. (b) Reducing : Find out how much has been given away or how much remains. (d) Inverse of addition : How much more to be added.

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The most important thing about models is to move away from them. You spend so long teaching students how to use models and then you don’t want them to use a model.

Well, actually, you want students to move toward efficiency.

Models are the visual ways problems are represented.

Strategies are the ways a student solves a problem, putting together and taking apart the numbers.

My students had been struggling with how to solve addition and subtraction word problems for what seemed like forever.

They could underline the question and they could find the numbers.I also change numbers throughout the year, from one-digit to two-digit numbers.The beauty of the blank spaces is that I can put any numbers I want into the problem, to practice the strategies we have been working on in class.They may even use two at the same time while they work out the similarities between the models.Students should also be able to create their own models.If you're seeing this message, it means we're having trouble loading external resources on our website.If you're behind a web filter, please make sure that the domains *.and *.are unblocked.Start your instruction with specific models and then allow students to choose one to use. Be purposeful in the numbers that you choose for your word problems.Different number sets will lend themselves to different strategies and different models.Younger students will act out problems, draw out problems with representations, and draw out problems with circles or lines. As the numbers get larger, the model needs to represent the relationship of the numbers Here is a student moving from drawing circles to using an inverted-v.Students should be solidly using one model before transitioning to another.


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