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Welcome To Room 21

Third Grade


Mr. Keuter

 Please use this website to:

*Get updates on curriculum and activities

*Find links to useful sites

*Look at a calendar of events


Recent Posts

Division using area model

Dear Families,
Here is a video showing the "area model" of division. We have just started working on this in class. It is part of tonight's homework (1/11/2018) for 4th graders. We are working on the traditional alogorithm as well, but this approach is much more freindly and gives another approach.

Rm. 21 Update

Rm. 21 Update

 Dear Families,

 Here is an update on what we have been doing and where we are headed in Rm. 21.


 We have just completed our first unit of study in both grades! They were:

 3rd: Theme: “How We Organize Ourselves.” Students are exploring rules, right, and responsibilities. They are learning about the three branches of government and exploring what it means to be a good citizen. Here are the lines of inquiry that guided this unit:

 *What are the differences between national, state, and local government?

*How are decisions made in different communities?

*What are the roles, rights, and responsibilities of citizens?

 4th: Theme: “Who We Are.” Students are exploring the concept of “multiple perspectives.” They are looking at how differing points of view contribute to our values, beliefs, and character. Here are the lines of inquiry that guided this unit:

*Understanding multiple perspectives/points of view

*Defining and developing our own beliefs, values, and personal character

*Skills for developing personal relationships


Our next units of study are:

 3rd: Theme: “How we express ourselves.” Students will be investigating attributes of music and forms of musical expression from around the world. They will look at the contributions the physical and historical attributes of a country make to its musical forms.

 4h: Theme: “How we express ourselves.” Students will explore stories from diverse cultures. They will identify related themes and elements from these stories. They will look at author’s purpose, message and lessons being shared.  


 3rd grade standards focus:

3.NBT Use place value understanding and properties of operations to perform multi-digit arithmetic.


1. Use place value understanding to round whole numbers to the nearest 10 or 100.


Measurement & Data

3.MD Solve problems involving measurement and estimation of intervals of time, liquid volumes, and masses of objects.


1. Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.



4th grade standards focus:


4.OA Use the four operations with whole numbers to solve problems.


3. Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding. Note: This standard is taught throughout the year. First trimester work includes work with +, and – only.



4.OA Gain familiarity with factors and multiples.


4. Find all factor pairs for a whole number in the range 1–100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1–100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1–100 is prime or composite. Note: This standard is taught throughout the year. First trimester work includes multiplying with one-digit numbers and multiples of 10, 100, 1,000.


Number & Operations in Base Ten

4.NBT Generalize place value understanding for multi-digit whole numbers.


1. Recognize that in a multi-digit whole number, a digit in one place represents ten times what it represents in the place to its right.


2. Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form. Compare two multi-digit numbers based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons.


Work on the above-mentioned standards continues through November.



 3rd grade standards focus:

 *Reading grade level passages fluently.

*Ask and answer questions to demonstrate understanding of text.

*Determining the meaning of words and phrases as they are used in a text, distinguish between literal and nonliteral language.

 4th grade standards focus:

 *Refer to details and examples in a text when explaining what the text says.

*Make logical inferences based on text.

*Describe character, setting, and events in a story drawing on specific details in the text.


 3RD and 4th: Both grade levels are working with narratives. Language conventions for 4th grade include work with relative pronouns and producing complete sentences (recognizing and correcting inappropriate fragments and run-ons). Language conventions for 3rd grade include form and use of possessives, commas and quotation marks in dialogue, and capitalization and ending punctuation.