*They even practiced several model diagrams among themselves as no one had ever learned to use models with word problems. This time many students wrote the equation, 59 85 = ? As the class continued to do more word problems, the diagrams appeared to be a helpful step in scaffolding success with word problems.Since part of their PLC work freed them up to observe lessons in each others' rooms, they decided they would watch Mr. Word problems require that students have the skills to read, understand, strategize, compute, and check their work. Following a consistent step-by-step approach-and providing explicit, guided instruction in the beginning - can help our students organize their thoughts and make the problem-solving task manageable.An increase in nonlinguistic representations allows students to better recall knowledge and has a strong impact on student achievement (Marzano, et. In classic education research, Bruner (1961) identified three modes of learning: enactive (manipulating concrete objects), iconic (pictures or diagrams), and symbolic (formal equation).*

While students need to experience many real-life situations they will get bogged down with the "noise" of the problem such as names, locations, kinds of objects, and other details.

It is the teacher's role to help students sort through the noise to capture what matters most for solving the problem.

Research has also validated that students need to see an idea in multiple representations in order to identify and represent the common core (Dienes, undated).

For word problems involving the operation of addition, students need to experience several types of problems to generalize that when two parts are joined they result in a total or a quantity that represents the whole.

Interestingly, it also informed the development of curriculum in Singapore, as they developed the "Thinking Schools, Thinking Nation" era of reforming their educational model and instructional strategies (Singapore Ministry of Education, 1997).

The bar model is a critical part of "Singapore Math." It is used and extended across multiple grades to capture the relationships within mathematical problems.A model can help students organize their thinking about a given problem, and identify an equation that would be helpful in solving the problem.Models are a kind of graphic organizer for the numbers in a word problem, and may connect to students' work with graphic organizers in other subjects.Given several missing addend situations, students may eventually generalize that these will be subtractive situations, solvable by either a subtraction or adding on equation.The work of Bruner, Dienes and Skemp informed the development of computation diagrams in some elementary mathematics curriculum materials in the United States.Forsten, 2010, p.1Students often have regarded each word problem as a new experience, and fail to connect a given problem to past problems of a similar type.Students need to sort out the important information in a word problem, and identify the relationships among the numbers involved in the situation.Are the parts similar in size, or is one larger than the other?Once students are comfortable with one kind of diagram, they can think about how to relate it to a new situation.Modeling can begin with young learners with basic addition, subtraction, multiplication, and division problems.Modeling can be extended to ratio, rate, percent, multi-step, and other complex problems in the upper grades.

## Comments Model Drawing Math Problem Solving

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