Lesson Title: Mental Math – Word Form and Standard Form
Date: 10-18-13
Class: Math
Instructional Objective(s):
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Convert written expressions to number expressions
GLCE or District Objective(s): CCSS 4.NBT.4 Fluently add and subtract multi-digit whole numbers using
the standard algorithm.
Behavior Management Procedures:
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Hand signal to get quiet
Raising hands to answer
Not taking away from others learning (refer to classroom contract)
o Earning the privilege to sit where you want during reading
o Earn game-day on Friday
o 1st time= warning
o 2nd time= moving seat or missing something like game-day or choosing a seat for reading
o 3rd time= going in the hall to work on school work
o 4th time= fish out of water
School-wide PBS
o Fish awards for good behavior
o Fish out of water for undesired behavior
Anticipatory Set:
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Review standard form
How do we write standard form?
Who can show me how to write “five hundred twenty five” in standard form?
Objective:
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I can translate words into number expressions.
Input:
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Today we are going to work in stations
There are 3 stations around the room
o One with me
 How do we write a number expression in standard form from written form?
 Walk student through finding the important information in the word problem
o One is a word sort
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 Match the written form and standard form expressions
o One is a white board station
 Student quiz each other (written and standard for expressions)
I will make groups and then each group with go to a station for ten minutes
Modeling:
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Walk students through a few examples of what will be at each station
Teach a mini lesson on what will be at my station
o How do we find the key information in written expressions so that we can change them
to standard form expressions
o What are some words that mean subtract?
 Decrease, less, minus…
o What are some words that mean add?
 More, sum, total…
Checking for Understanding:
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What is a written expression? Give me an example
What is a standard form expression? Give me an example
Guided Practice:
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I will work with students at my station in the front of the room
Explain how to write standard form from word expressions
Have students practice with me
Independent Practice:
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Students working at the other stations
Closure:
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Talk about some things students found challenging
Talk about more words we came across that meant add and subtract
Evaluation of the Objective:
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Walking around watching the student at each station while the students at my station work
Answers on the end of the chapter test
o Did they answer correctly and meet the objective or not?
Plans for Differentiation:
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Giving students that get done early more difficult problems (more wording)
Giving students that need help easier problems (less wording)
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Problems at student’s reading level
Materials Needed for Teaching:
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White board
Markers
Pencils
Paper
Erasers
Mini White boards
Word sorts