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Four-Step Problem Solving Process

First Grade

Four-Step Process for Problem Solving

- Teaches the importance of language within math

problems - Provides foundation for algebraic understanding
- Provides for differentiated instruction
- Developed in Singapore
- Visual representation of details and actions

which assists children with problem solving - Helps children logically think using visual

models to determine their computations - Fosters quantitative reasoning (number sense)

when teachers question - Empowers students to think systematically and

master more difficult problems - Makes 2 step problems easy to work

Four-Step Process for Solving Problems

Step 2-Details and Model Drawing

Step 1-Main Idea

- Main Idea of Question (What do you want to find

out?)

Step 4-How

Step 3-Strategy/Solve

- Describe how the problem was solved.

Solve the Problem

Four Step Process

- Main Idea
- Read the problem. What do you want to find out?
- Write the main idea from the question.
- Details or
- Write who the problem is about
- Write what the problem is about
- Use one Unifix cube to represent each what or

variable. - Then, draw the Unifix cube to represent one unit.
- Reread the problem one sentence at a time.
- Adjust the Unifix cubes and the drawing (model)

of the Unifix cubes to match the story problem

and label. - Put a question mark on the drawing, or model, to

show what you are trying to find out.

Model Drawing

Four-Step Process Continued

- 3. Strategy/Solve the Problem
- Write the number sentence and solve the problem.
- 4. How
- Describe how the problem was solved.

Addition

Action Put Together

Ann has 2 toys. Jeff has 3 toys. How many toys

do they have together?

Ann has 2 toys.

Jeff has 3 toys.

Step 2 Details and Model Drawing

Step 1 Main Idea

2

Ann- toys or A.T.

Toys together?

?

3

Jeff- toys or J.T.

Step 4 How

Step 3 Strategy/Solve

2 3

Add 2 and 3

5 sum

Andy and Henry went to the zoo.

Andy saw 4 .

Henry saw 5 .

How many animals did the 2 boys see?

Details

Main Idea

4

A. T. (Abbreviate for Andy-Turkeys) H. P.

(Abbreviate for Henry-Penguins)

animals 2 boys see?

?

5

Strategy/Solve

How

4 5

Put together 4 and 5

9 sum

Subtraction

Action Take Away

Amy has 4 toys. She gave away 1 toy. How many

toys are left?

How many toys are left?

Step 2

Step 1

4

X

A.T. (abbreviate for Ann- toys)

Toys left

1

?

Step 4

Step 3

4 - 1

Subtract 1 from 4.

3

Subtraction

Steve has 4 toys. Jill has 1 toy. How many more

toys does Steve have than Jill?

Step 1

Step 2

4

S.T. (Abbreviate for Steve Toys) J.T.

(Abbreviate for Jill-Toys)

More toys Steve than Jill

?

1

Step 4

Step 3

4 - 1

Subtract 1 from 4.

3 diff.

Ana has 3 cones.Leo has 4

apples.How many fewer cones are there than

apples?

Details

Main Idea

3

A.C.(abbreviate for Ana-cones) L.A. (abbreviate

for Leo-Apples)

fewer cones than apples?

?

4

How

Strategy/Solve

4 - 3

Subtract 3 from 4

1

Subtraction

Alex has 5 balls. Three are baseballs. The rest

are footballs. How many are footballs?

Step 2/ Details

Step 1/ Main Idea

5

A.B. (abbreviate Alex-Balls)

B

B

B

F

F

footballs

3

?

Step 4/ How

Step 3/Strategy (Solve)

5 - 3

Subtract 3 from 5.

2

Tips

- Be sure all the drawings of the Unifix cubes

(units) for each variable are touching each

other so comparisons are clearer. - In the drawing, list the variables in the order

they appear in the problem. - Include labels and brackets to help clarify

drawings. - Too often, students rush through a problem and

answer the wrong question. Placing the question

mark beside what you are trying to find helps to

prevent that.

Extra Information in Word Problems

- Sometimes there will be extra information in a

word problem. Try to keep students focused on

what the question is asking them to find. - If a child understands that the details are

usually what is needed to answer the main idea of

the question, he will be less likely to include

information that is not needed. - However, if the child includes the extra

information in the drawing, placing the ? in the

model will help them understand what information

is needed to answer the question.

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For a small fee you can get the industry's best online privacy or publicly promote your presentations and slide shows with top rankings. But aside from that it's free. We'll even convert your presentations and slide shows into the universal Flash format with all their original multimedia glory, including animation, 2D and 3D transition effects, embedded music or other audio, or even video embedded in slides. All for free. Most of the presentations and slideshows on PowerShow.com are free to view, many are even free to download. (You can choose whether to allow people to download your original PowerPoint presentations and photo slideshows for a fee or free or not at all.) Check out PowerShow.com today - for FREE. There is truly something for everyone!

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