Common Core Standards

Word Problems using a Bar Model Tape Diagram) and the RDWW strategy we use in class:
R ead the word problem & extract (underline) the information needed to solve the problem
Draw picture to represent the problem
Write a number sentence horizontally to represent your drawing
Write an explanation of your answer to check for reasonableness

Word Problems using a Bar Diagram & RDWW

This strategy is used throughout the
Common Core curriculum to solve word problems

Lessons 1&2: Each place on a Place Value Chart is 10 times larger than the place to the
right

The value of a place in digit

4.NBT.1

The value of a place in digit

4.NBT.1

Lesson 3: Write numbers in word form & standard form with the help of commas

Using commas to write numbers

4.NBT.2

Lesson 4: Using place value to write numbers in expanded form

Expanded Form

4.NBT.2

Lesson 5: Using <,>,= symbols and place value to compare digits

Comparing digits with place value

4.NBT.2

Lesson 6: Finding 1, 10,or 100 thousand more or less than a given digit

Number Patterns

4.NBT.2

Lesson 7: Use a number line model to round

Rounding with a number line

4.NBT.3

Lesson 8&9: Using a number line to round to a specific place. Remember a number line can be drawn horizontally or vertically

Rounding to a specific place with a number line

4.NBT.3

Lesson 10: Rounding with real world problems

Rounding in real life

4.NBT.3

Lesson11: Using place value to understand the addition algorithm

Using place value to add

4.NBT.4, 4.NBT1, 4.NBT.2, 4.OA.3

Lesson 12: Using rounding to check for reasonableness of your sum

Using rounding to check answers

4.OA.3

Lesson 13: Using place value to understand the subtraction algorithm

Using place value to subtract

4.NBT.4, 4.NBT1, 4.NBT.2, 4.OA.3

Using the bar diagram to subtract

4.OA.3

Lesson 16: Solve two step real world word problems with bar diagram (aka tape diagram)

Using the bar diagram in two step subtraction problems

4.OA.3

Lesson 17: Using a bar model to solve a comparison word problem

Using a tape diagram (aka bar model) to solve a comparative word problem

4.OA.3

Lesson 18: Using rounding to check for reasonableness of addition word problem

Using rounding to check addition

4.OA.3

Lesson 18: Using rounding to check for reasonableness of subtraction word problem

Using rounding to check subtraction

4.OA.3

Lesson 19: Solve addition word problems           using a variable

Using variables in addition

4.OA.3

Lesson 19: Solve subtraction word problems     using a variable